Skip to main content
Dell · OptiPlex 5400 AIO · DN Nagar

Dell OptiPlex 5400 AIO
Computer Windows Not Booting
in DN Nagar

Expert diagnosis and repair for Computer Windows Not Booting on your Dell OptiPlex 5400 AIO in DN Nagar. Free doorstep pickup, genuine parts & 90-day warranty.

✓ ₹350 Inspection (refunded if you proceed with repair) ✓ Free Doorstep Pickup ✓ Same-Day Repair ✓ 90-Day Warranty
WhatsApp to Book Inspection +91 74997 61196

Open 9 AM – 9 PM · 7 days · ₹350 inspection fee (refunded if you proceed with repair)

Free
Diagnosis
90 Days
Repair Warranty
Same-Day
Turnaround
Free
Doorstep Pickup
OEM
Quality Parts
4.9 ★
Customer Rating
Same Day Repair 90-Day Warranty Genuine Parts Transparent Pricing Walk-in Welcome Free Pickup & Drop Since 2011 4.9/5 Rated ISO 9001:2015 Certified Same Day Repair 90-Day Warranty Genuine Parts Transparent Pricing Walk-in Welcome Free Pickup & Drop Since 2011 4.9/5 Rated ISO 9001:2015 Certified
Symptom Checker

Does Your Dell OptiPlex 5400 AIO Show These Signs?

Common indicators of Computer Windows Not Booting on Dell OptiPlex 5400 AIO. Recognise 2 or more? Your laptop or computer needs professional attention.

Laptop clearly shows signs of Computer Windows Not Booting

Normal laptop performance significantly impacted

Issue worsening with continued use over time

Standard troubleshooting has not resolved it

Laptop unreliable for daily work or personal use

Risk of further hardware damage if left unrepaired

Don't Ignore Computer Windows Not Booting

Unresolved hardware problems worsen over time and can cause secondary damage — increasing repair cost significantly.

Book Inspection (₹350)

Dell OptiPlex 5400 AIO Computer Windows Not Booting in DN Nagar in DN Nagar — Comprehensive Guide

Tired of middlemen? Work with the actual repair team — Xigox. Fast doesn't have to mean careless when it comes to Computer Windows Not Booting in DN Nagar. Xigox proves it every day. With free doorstep pickup across DN Nagar, same-day turnaround on most repairs, and fair transparent pricing, getting your Dell OptiPlex 5400 AIO fixed has never been easier.

Affordable Computer Windows Not Booting in DN Nagar

High-quality Computer Windows Not Booting doesn't have to be expensive in DN Nagar. By optimizing our repair processes, we offer savings of up to half the cost compared to official repair outlets. You get the same OEM components for your Dell OptiPlex 5400 AIO, without the massive markup. Request a price estimate for Computer Windows Not Booting in DN Nagar today.

What Changes After Computer Windows Not Booting

Following a professional Computer Windows Not Booting in DN Nagar, you can expect significantly better performance: faster boot times, lower fan noise, full-day battery performance, or crisp, bright display — based on what was fixed. Xigox performs a benchmark at the end of every Computer Windows Not Booting in DN Nagar to document the improvement.

OEM-Grade Solutions for Computer Windows Not Booting

Longevity matters for Computer Windows Not Booting. Because of this, our DN Nagar service centre strictly uses OEM-grade parts for your Dell OptiPlex 5400 AIO. Unlike unverified repairers in DN Nagar that install grey-market components, we source directly from certified suppliers. This guarantees your Computer Windows Not Booting will last, supported by our standard 90-day warranty.

Business & Corporate Computer Windows Not Booting in DN Nagar

Xigox isn't just for individuals DN Nagar rely on our Computer Windows Not Booting to keep operations running. Our corporate solutions include bulk repair contracts, guaranteed 4-hour response times, and dedicated account managers. Whether you have 5 laptops or 500, Xigox handles Computer Windows Not Booting for your DN Nagar office with corporate billing and detailed repair documentation.

Post-Repair Quality Check after Computer Windows Not Booting

Completing the repair is just the first step at Xigox. Prior to delivery in DN Nagar, it undergoes a strict multi-point inspection. We verify that your Computer Windows Not Booting was executed flawlessly, testing screen calibration. This attention to detail is why our return rate is so low across DN Nagar.

Expert Technicians for Computer Windows Not Booting in DN Nagar

Not everyone in DN Nagar can handle complex Computer Windows Not Booting. Xigox's engineers possess years of experience specifically for Dell OptiPlex 5400 AIO hardware. Whether it's a minor fix or advanced component-level motherboard repair, we fix it properly right here for DN Nagar clients.

Student & Educator Discounts for Computer Windows Not Booting

Are you a student in DN Nagar? We know that a reliable Dell OptiPlex 5400 AIO is critical for online classes. Xigox provides special student discounts for Computer Windows Not Booting. Just present your valid student ID when booking in DN Nagar to claim a flat discount on your repair. Don't let tech issues hurt your grades — book now for affordable Computer Windows Not Booting.

Multi-Brand Expertise in DN Nagar

Your Dell OptiPlex 5400 AIO model never limits what we can fix. Our DN Nagar technicians are trained across all major brands: HP, Dell, Lenovo, Asus, Acer, MSI, Toshiba, Samsung, Sony VAIO, and Apple MacBook. Different manufacturers have unique design choices — Lenovo's ThinkPad keyboard — and we account for these in every repair. Model-specific experience cuts diagnostic time and improves first-time fix rates.

Post-Repair Support for Computer Windows Not Booting

Each Computer Windows Not Booting performed by Xigox in DN Nagar comes with a comprehensive 90-day warranty covering parts and labour. Simply put, if the same issue recurs within 90 days, we redo it completely free. Other services in DN Nagar won't back their work — Xigox provides a printed warranty receipt every single time.

Urgent Computer Windows Not Booting Available

Can't wait 48 hours? Xigox offers rush Computer Windows Not Booting in DN Nagar for urgent situations. From an important client meeting and your Dell OptiPlex 5400 AIO just crashed, our emergency service ensures completion within the same business day. Emergency Computer Windows Not Booting can be arranged including weekends in DN Nagar. Just say 'priority' when calling and our team will fast-track your Computer Windows Not Booting immediately.

Don't gamble with cheap, unverified repairers in DN Nagar. Xigox combines certified engineers, OEM-grade spares, upfront pricing, and a real warranty on every Computer Windows Not Booting. Book your Computer Windows Not Booting today — call or WhatsApp +91 74997 61196 for same-day service in DN Nagar.

Root Cause Analysis

What Causes Computer Windows Not Booting on Dell OptiPlex 5400 AIO?

Understanding the root cause helps our engineers perform a precise, lasting repair — not just a temporary patch.

Physical Damage

Accidental drops, pressure or impact causing mechanical damage to internal components.

Liquid Exposure

Water, beverages or humidity causing short circuits or corrosion on circuit boards.

Normal Wear & Tear

Components degrade naturally with regular use — batteries, connectors and hinges are most affected.

Manufacturing Defect

Factory faults that surface after the warranty period in certain production batches.

Cost Estimate

Repair Cost for Dell OptiPlex 5400 AIO Computer Windows Not Booting

Transparent pricing · ₹350 inspection fee (refunded if you proceed with repair) first · Pay only after approval

Repair TypeEstimated CostWarranty
Computer Windows Not Booting Repair ₹199 90 Days
Computer Windows Not Booting Repair ₹199 90 Days
Computer Windows Not Booting Repair ₹199 90 Days
Computer Windows Not Booting Repair ₹199 90 Days
Computer Windows Not Booting Repair ₹199 90 Days
Computer Windows Not Booting Repair ₹199 90 Days

Inspection fee ₹350 — refunded if you proceed with repair. No work starts without your approval.

Get Exact Quote
Why Us?

Why Choose Xigox for Dell Dell Inspiron 27 7720 AIO Repair in DN Nagar?

With 1,00,000+ successful repairs and a 4.9-star rating, Xigox is DN Nagar's most trusted independent Dell repair specialist. Conveniently located near DN Nagar.

Brand-Trained Technicians

Our engineers are specifically trained on Dell hardware — not generalists. Every repair is precise.

Genuine & OEM-Grade Parts

We use genuine Dell parts wherever available; otherwise OEM-certified compatible components.

90-Day Parts Warranty

Every repair backed by a written 90-day warranty. Same fault recurs? We fix it free of charge.

Same-Day Turnaround

Most Dell repairs in DN Nagar completed same-day. Urgent service available for critical cases.

Full Transparency

We quote before starting work. No hidden fees. You pay exactly what you were quoted.

Lifetime Post-Repair Support

Free WhatsApp support for any questions about your Dell Dell Inspiron 27 7720 AIO after repair — always.

1,00,000+
Repairs Completed
Since 2011
4.9 ★
Average Rating
44,883+ reviews
90 Days
Repair Warranty
Parts & labour
30 Min
Avg Response
For common issues
Free
Pickup & Drop
₹350 inspection fee
2011
Est. Since
15+ yrs in Mumbai Suburban
Our Repair Facility

Real Technicians. 100% Guaranteed Work.

Most online repair websites outsource your laptop or computer to random local shops. Xigox operates its own fully-equipped repair labs with dedicated BGA reballing stations and microscopic soldering equipment. When you trust us with Dell OptiPlex 5400 AIO, it stays securely in our controlled environment.

Every technician at Xigox is in-house trained and certified — no freelancers, no third-party sub-contractors. We invest in continuous training so our engineers stay ahead of the latest chipsets, display technologies, and component architectures.

Our lab follows strict data-confidentiality protocols. Your personal files, passwords, and accounts are never accessed during repair — guaranteed.

No Third-Party Outsourcing Strict Data Confidentiality Micro-Soldering Equipment Certified Engineers Only CCTV-Monitored Lab Genuine OEM-Grade Parts
Talk to a Technician WhatsApp Us
Technician diagnosing Dell OptiPlex 5400 AIO Repair in Xigox Mumbai lab
Specialist Logic Board Dell OptiPlex 5400 AIO Repair at Xigox repair facility
Xigox repair lab workbench — Dell OptiPlex 5400 AIO Repair
Inside Xigox certified repair centre — Dell OptiPlex 5400 AIO Repair
Our Process

How We Fix Dell OptiPlex 5400 AIO Computer Windows Not Booting

A transparent, step-by-step process from booking to delivery — nothing hidden

01

Describe Your Issue

Call or WhatsApp +91 74997 61196. Tell us about the Computer Windows Not Booting on your Dell OptiPlex 5400 AIO in DN Nagar — no technical jargon required.

02

Free Doorstep Pickup

We dispatch a certified technician to your DN Nagar address. Free pickup — no travel, no hassle, no waiting at a service centre.

03

Expert Diagnosis

Your Dell OptiPlex 5400 AIO is inspected by a specialist. We identify the root cause of the Computer Windows Not Booting and provide a written quote — zero obligation.

04

Approved Repair

Once you approve the quote, we fix the Computer Windows Not Booting using OEM-grade parts. No work starts without your explicit consent.

05

12-Point QA Check

Every repaired Dell OptiPlex 5400 AIO passes a rigorous 12-point quality assurance checklist. We verify the Computer Windows Not Booting is fully and permanently resolved.

06

Delivery + 90-Day Warranty

Your Dell OptiPlex 5400 AIO is returned to your DN Nagar address with a written 90-day warranty certificate. Same fault recurs? Fixed free.

Book Free Pickup Now
Verified Customer Reviews

What Customers Say About Dell OptiPlex 5400 AIO Computer Windows Not Booting in DN Nagar

4.9/5 · 12 Reviews

Real customers · No paid reviews · All verified repairs

Google
MSI Modern AM242 AIO — Display Lines Fix

"Horizontal coloured lines appeared across my MSI Modern AM242 AIO display making work impossible. Xigox Dadar diagnosed a failing T-CON board and replaced it. Sharp, line-free display restored perfectly. Quick turnaround on part sourcing."

A
Ankush Choudhary
📍 DN Nagar · 2 Aug 2025
40
Google
MSI Modern AM242 AIO — Fan Noise Fix

"Fans on my MSI Modern AM242 AIO were running at maximum speed constantly creating unbearable noise. Xigox Dadar replaced the internal fan assembly and cleaned all heatsinks. Whisper-quiet operation restored even during intensive tasks."

V
Vaishali Oak
📍 DN Nagar · 3 Dec 2025
20
Google
MSI Modern AM242 AIO — HDD SSD Failure Fix

"Internal hard drive on my MSI Modern AM242 AIO failed with clicking sounds. Xigox Dadar cloned recoverable data to a new one-terabyte SSD and installed it in the sealed chassis. Lightning-fast performance now. All files saved."

P
Pallavi Dalvi
📍 DN Nagar · 25 Sep 2025
15
Google
Acer Aspire C24-1750 — Webcam Fix

"Built-in webcam on my Acer Aspire C24-1750 showed only a black screen during meetings. Xigox Dadar replaced the tiny camera module inside the bezel without damaging the screen. Clear video quality restored. Delicate, precise work."

P
Pooja Nair
📍 DN Nagar · 28 Feb 2026
24
Google
Acer Veriton Z AIO — Overheating Fix

"My Acer Veriton Z AIO was overheating badly in the compact chassis causing random shutdowns. Xigox Dadar cleaned all dust, replaced thermal compound, and improved internal airflow. Runs cool and stable now even under heavy load."

D
Dinesh Thakare
📍 DN Nagar · 9 Mar 2025
37
Google
Acer Aspire C27-1700 — Built-in Speaker Fix

"Built-in speakers on my Acer Aspire C27-1700 had crackling and one side was dead. Xigox Dadar replaced both speaker drivers with matching OEM units. Crystal-clear stereo sound now at every volume level. Calls and music sound perfect."

M
Megha Joshi
📍 DN Nagar · 19 Oct 2024
12
Page 1 / 2

← Swipe or tap dots to browse →

See All 44,883+ Reviews 💬 Book Now Like They Did
WATCH & LEARN

Watch How We Handle Laptop & Computer Repairs

Step-by-step repair videos by our ISO-certified technicians

Inside Xigox — Computer & Laptop Repair Service Centre, Mumbai
Featured

Inside Xigox — Computer & Laptop Repair Service Centre, Mumbai

Laptop & Computer Repair, Sales & Data Recovery — Xigox

Laptop & Computer Repair, Sales & Data Recovery — Xigox

How the Xigox team handles laptop and computer repair, sales, service and data recovery across Mumbai, Bangalore and Hyderabad.
Xigox Laptop & Computer Repair — Real Customer Experience

Xigox Laptop & Computer Repair — Real Customer Experience

See how Xigox handles real customer repairs — fast diagnosis, transparent pricing and a 90-day warranty on every job.
Xigox Service Centre — Mumbai's Trusted Repair Experts

Xigox Service Centre — Mumbai's Trusted Repair Experts

A closer look at the Xigox team, our tools, and the repair process that has earned us 29,000+ five-star reviews across Mumbai MMR.

Subscribe on YouTube @xigox

Full repair tutorials, tips & behind-the-scenes footage

Watch Our Real Repair Reels

@xigox on Instagram — screen repairs, motherboard fixes, before & afters

Follow @xigox
Reel
🖥️

Screen Replacement

Cracked screen → brand new in 30 min
Reel
🔋

Battery Replacement

0% health → 100% — same day
Reel
🔧

Motherboard Repair

Chip-level soldering under microscope
Reel
💾

Data Recovery

Files rescued from dead hard drive
Reel
🍎

MacBook Repair

Liquid damage — full restore
Reel
🖨️

Printer Repair

Paper jam to perfect print — see how

Real repair footage — no actors, no scripts

Watch all Reels →
FAQs

FAQs — Dell OptiPlex 5400 AIO Computer Windows Not Booting in DN Nagar

Everything you need to know before booking a diagnosis

8 questions answered Verified & updated
The cost to fix Computer Windows Not Booting in DN Nagar varies by laptop or computer model and severity. Xigox charges ₹350 for inspection — refunded if you proceed with the repair. A transparent written quote before any work begins. You're never charged until you approve the repair — no hidden fees, ever. We also serve Four Bungalows, Andheri West, Seven Bungalows, so you can recommend us to neighbours too.
Ask on WhatsApp Call Now
Yes — Xigox specialises in Computer Windows Not Booting across DN Nagar. Our certified technicians diagnose and fix the problem efficiently, using OEM-quality parts and backed by a 90-day warranty. Free doorstep pickup is available in DN Nagar — call or WhatsApp +91 74997 61196. We also serve Four Bungalows, Andheri West, Seven Bungalows, so you can recommend us to neighbours too.
Ask on WhatsApp Call Now
Most Computer Windows Not Booting issues in DN Nagar are resolved the same day — typically within 2–4 hours of pickup. We provide an accurate time estimate during the ₹350 inspection (refunded if you proceed with repair) so you're never left guessing. We also serve Four Bungalows, Andheri West, Seven Bungalows, so you can recommend us to neighbours too.
Common causes of Computer Windows Not Booting include physical impact, wear and tear, manufacturing defects, water damage, overheating, or software conflicts. Xigox technicians perform a thorough diagnosis to identify the root cause and fix it permanently rather than applying a temporary patch. We also serve Four Bungalows, Andheri West, Seven Bungalows, so you can recommend us to neighbours too.
Every repair at Xigox — including Computer Windows Not Booting fixes — is covered by a 90-day warranty. If the same problem recurs within 90 days, we repair it free of charge. Our warranty is provided in writing and applies to all repairs across DN Nagar and Mumbai MMR. We also serve Four Bungalows, Andheri West, Seven Bungalows, so you can recommend us to neighbours too.
Booking is simple: WhatsApp or call +91 74997 61196, describe your device issue, and receive a free quote. Schedule a doorstep pickup at your convenience — we're available 9 AM–9 PM, 7 days a week. No walk-in required.
Ask on WhatsApp Call Now
Yes — every repair at Xigox comes with a 90-day warranty on the repaired component and all parts used. If the same issue returns within 90 days, we fix it free of charge. Warranty terms are provided in writing at the time of repair.
Yes! Xigox provides completely free doorstep device pickup and delivery across Mumbai, Thane, Vasai-Virar, and Palghar. A technician comes to your home or office, collects your device, repairs it, and returns it — no travel needed.

Still have questions?

Our team responds within 15 minutes on WhatsApp. Send us your question and get expert advice instantly.

Ask on WhatsApp Call +91 74997 61196

Dell Dell OptiPlex 5400 AIO Repair in DN Nagar — Xigox

Xigox is DN Nagar's leading independent specialist for Dell Dell OptiPlex 5400 AIO repair. Our engineers are not generalists — they undergo dedicated training on Dell hardware, firmware and diagnostics. Since 2011, we have completed over 1,00,000+ repairs across all Dell product lines, earning a 4.9-star rating from verified customers.

We stock genuine Dell parts and OEM-certified components for every common Dell OptiPlex 5400 AIO fault — from screen replacements and battery swaps to logic board repairs and data recovery. Before any work begins, you receive a written cost estimate. Our ₹350 inspection fee is refunded if you proceed with the repair.

We actively serve the entire 400053 postal area within Mumbai Suburban district, ensuring same-day response for every repair request. ₹350 inspection fee (refunded if you proceed with repair). Located near DN Nagar, our service coverage extends across DN Nagar and all surrounding localities. In addition to DN Nagar, we also provide doorstep repairs and free pickup for lab work for customers in Four Bungalows, Andheri West, Seven Bungalows and other nearby areas.

Doorstep part replacement (battery, keyboard, screen, SSD, RAM) is available across DN Nagar. For chip-level and motherboard repairs, we provide free pickup and drop — confirming within 15 minutes of your booking. Most common faults are resolved same-day. For complex repairs, we provide a realistic timeline and keep you updated throughout.

Every Dell repair at Xigox is covered by a 90-day warranty on all parts and labour. If the same fault recurs within the warranty period, we fix it at no charge. Our after-repair WhatsApp support means we are always available to answer questions about your Dell Dell OptiPlex 5400 AIO.

Service Hours
Monday – Sunday · 9 AM – 9 PM
Open on all public holidays
Service Area
DN Nagar & surrounding Mumbai areas
Doorstep repairs + free pickup for lab work
Contact Us
+91 74997 61196
info@xigox.com
Our Guarantee
90-day warranty on all repairs
Free re-repair if same fault recurs

Computer Windows Not Booting Repair for Other Dell Models

We diagnose and fix Computer Windows Not Booting on all Dell models in DN Nagar

Dell Dell Inspiron 24 5420 AIO Dell Dell Inspiron 27 7720 AIO Dell Dell OptiPlex 7410 AIO

Other Dell OptiPlex 5400 AIO Problems We Fix

Xigox resolves all common Dell OptiPlex 5400 AIO hardware and software issues in DN Nagar

All-in-One Backlight Failure All-in-One Camera Not Working All-in-One Display Lines All-in-One Fan Noise All-in-One HDD/SSD Failure All-in-One Not Turning On All-in-One Overheating All-in-One Screen Cracked All-in-One Slow Performance All-in-One Speaker Issue All-in-One Touchscreen Not Working All-in-One USB Ports Problem

Computer Windows Not Booting on Other Brands in DN Nagar

We fix Computer Windows Not Booting on all major all_in_one brands — same quality, same warranty

Acer Apple ASUS HP Lenovo Microsoft MSI Samsung

Areas, Roads & Landmarks We Cover in DN Nagar

Free pickup & drop across all these neighbourhoods

📍 Localities & Neighbourhoods

Andheri West Seven Bungalows Four Bungalows

🛣️ Roads & Highways

JP Road Link Road Lokhandwala Back Road

⭐ Landmarks & Famous Places

DN Nagar Metro Station

Dell OptiPlex 5400 AIO Computer Windows Not Booting Repair Near DN Nagar

Free doorstep service available in all these nearby areas

Four Bungalows
0.7 km away
Andheri West
0.7 km away
Seven Bungalows
0.9 km away
Veera Desai Road
1.1 km away
Juhu
1.4 km away
JVPD Scheme
1.5 km away
Yari Road
1.5 km away
Versova
1.5 km away

Computer Windows Not Booting Repair Across Mumbai — All Locations

Indralok Pedder Road Goregaon West Reay Road Govandi East Sandor Mantralaya Pokharan Road Kandivali East Boisar Station Navghar Bhayandar Kopri Ambadi Road Kanjurmarg East Currey Road Palghar Nana Chowk Nalasopara West Golden Nest Chandansar Road Tilak Nagar Wadala Masjid Bunder Vasai Creek Sakinaka Kolshet Hiranandani Estate Pleasant Park Poisar Zai
Explore More Services

More Repair & Tech Services Near DN Nagar

Same certified technicians · Free pickup · 90-day warranty across all services.

₹350 Inspection (refunded if you proceed with repair) · 1,00,000+ Repairs · 4.9 ★ · 90-Day Warranty

Ready to Fix Your
Dell OptiPlex 5400 AIO?

₹350 Inspection (refunded if you proceed with repair) · Expert repair for Computer Windows Not Booting · 90-day warranty

Serving DN Nagar and all of Mumbai MMR · Open 9 AM – 9 PM daily

WhatsApp Now — Free Pickup +91 74997 61196

Dell OptiPlex 5400 AIO Computer Windows Not Booting Repair in DN Nagar — Service Area & Coverage

Xigox provides dell optiplex 5400 aio computer windows not booting repair across DN Nagar (PIN 400053), in the Mumbai Suburban district of Mumbai. Our doorstep pickup and on-site service cover the entire DN Nagar area and the neighbourhoods around it.

Localities we cover in DN Nagar: Andheri West, Seven Bungalows, Four Bungalows. Wherever you are in DN Nagar, a certified Xigox technician can reach you — usually within 30–60 minutes.

Our technicians regularly serve homes, societies and offices around DN Nagar Metro Station, and along JP Road, Link Road and Lokhandwala Back Road. If you're near any of these landmarks, same-day pickup for dell optiplex 5400 aio computer windows not booting repair is almost always available.

Dell OptiPlex 5400 AIO Computer Windows Not Booting Repair near DN Nagar

We also serve these nearby areas — tap your locality for local dell optiplex 5400 aio computer windows not booting repair:

Same-Day Repair Available

Fix Computer Windows Not Booting on Dell OptiPlex 5400 AIO — Book Now

₹350 inspection fee refunded if you proceed with repair · 90-day warranty

Booking Confirmed!

We'll call you within 1 hour to confirm your appointment and arrange doorstep pickup.

Inspection Fee: ₹350

  • Refunded if you proceed — credited toward total repair cost
  • Applies if laptop is not repairable or you decline repair
Message Us on WhatsApp Call +91 74997 61196

+91

Inspection Fee: ₹350

  • If you proceed with the repair, ₹350 is refunded — applied as a credit toward your total repair cost.
  • If your laptop is not repairable or you decide not to continue, the ₹350 inspection fee will still apply.

By submitting, you agree to our Privacy Policy.

Your info is 100% private — never shared

ISO
Call Now Same-Day · 90-Day Warranty WhatsApp