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Onsite PC Repair Singapore: No Display Fixed with CPU Replacement Under Warranty | Mansa Computers
Quick answer: This onsite PC repair in Singapore fixed a no-display fault caused by a failed CPU. RAM was replaced first at the customer's home, but the fault persisted. The PC was brought to our office and the CPU was replaced the next day. The customer had their PC back in less than 24 hours, covered under warranty.
Last updated: September 2025
Job Summary
Service
Onsite PC repair: no display fault, RAM and CPU replacement, Singapore
Customer's Problem
PC had no display output. Would not boot to any screen.
What We Did
Replaced RAM onsite. Fault persisted. Brought PC to office. Replaced CPU next day. PC returned to customer same day.
Result
No display fault resolved. PC back in the customer's hands within 24 hours. Both repairs covered under warranty.
Watch the Repair
What Was Causing No Display?
This onsite PC repair in Singapore started with a customer whose PC had gone dark: no display output, no boot, nothing on screen. No-display faults have several possible causes, so we started with the most common one and worked from there.
Root Cause
The initial suspect was the RAM. Faulty RAM is one of the most common causes of no-display faults, and replacing it first is the right call. After the RAM swap onsite, the fault did not clear. That pointed to the CPU. Back at our office the following day, CPU testing confirmed a failed processor. The CPU was replaced under warranty, and the PC booted cleanly on the first try.
How We Diagnosed It
- RAM tested onsite: replaced with known-good sticks. Fault did not clear.
- GPU checked: reseated and tested for display output at the onsite visit
- CPU flagged: with RAM ruled out and GPU confirmed working, the CPU became the primary suspect
- Office CPU test: confirmed the processor had failed and needed replacement
- Post-repair boot test: PC booted fully after CPU swap with no further errors
How We Fixed It
- Onsite visit: Our technician arrived at the customer's home in Punggol and assessed the no-display fault on the spot.
- RAM replaced onsite: Swapped in new RAM as the first fix. The PC still showed no display after the swap.
- PC brought to office: With the fault unresolved, we took the PC back to our office for deeper component testing rather than leaving the customer without a diagnosis.
- CPU identified and replaced: Office testing confirmed a failed CPU. The processor was replaced under warranty the following day.
- PC returned same day: The PC booted cleanly after the CPU swap. We returned it to the customer the same day it was fixed.
Photo Guide
Swipe or use arrows to see the repair process.
The Onsite Visit
Technician at the customer's home in Punggol. PC showing no display on any output.
RAM Replaced First
New RAM was fitted onsite as the first troubleshooting step.
Still No Display
System was tested after the RAM swap, but the fault remained. The PC needed deeper office testing.
Brought to Office
The PC was brought back to Mansa for further checks after the onsite RAM swap did not solve the issue.
Tested and Returned
The next day, the CPU was replaced at the office. The PC booted normally, passed testing, and was returned to the customer the same day.
“When a PC has no display, RAM is the right place to start. It’s one of the most common causes and often the fastest fix. When that doesn’t clear it, you go to the CPU. We don’t guess. We work through the components in order and tell the customer exactly what we found at each step.”
- Mansa ComputersFinal Result
The no-display fault was traced to a failed CPU and resolved with a warranty replacement. The customer was without their PC for less than 24 hours from the time we picked it up to the time we returned it.
Not every repair can be completed at the customer's door. When it can't, we bring the PC to our office, fix it fast, and return it. The goal is always to keep downtime as short as possible.
Cost Breakdown
| Service / Parts | Cost (SGD) |
|---|---|
| CPU replacement | Covered under warranty |
| Total charged to customer | $0 |
Warranty coverage depends on your components and purchase date. If your parts are out of warranty, repair costs vary by fault. Press the WhatsApp button on the right to speak with us about your situation.
Frequently Asked Questions
What causes a PC to have no display?
No display output on a PC usually points to RAM, GPU, CPU, or motherboard. RAM issues are one of the most common causes and the easiest to test: swapping in known-good sticks takes minutes. If that doesn't fix it, the next suspects are the GPU connection and the CPU. A failed CPU is less common but does happen, and it produces the same symptom: power comes on, but nothing appears on screen. Diagnosis requires working through each component in order.
What happens if Mansa can't fix my PC onsite?
If the fault can't be resolved at your home, we bring the PC back to our office at 1 Ubi View, Focus One, Singapore. Most office repairs are completed within one to three days. We return the PC to you once the fix is confirmed. We'll tell you exactly what we found and when to expect it back before we leave.
Does Mansa handle warranty repairs in Singapore?
Yes. If your components are within their warranty period, we coordinate the replacement process. In this case, both the RAM and CPU were covered under warranty, so the customer paid nothing for either part. Bring your purchase records when you contact us and we'll confirm what's covered before we start any work.
PC With No Display in Singapore?
Tell us the symptoms and we'll walk you through what the likely cause is before you come in or book an onsite visit.
Press the WhatsApp button on the right to speak with us.
Need some help with your PC?
Drop us an email or Whatsapp text!
Give us a brief description of the issue you're facing and we'll get back to you in the quickest time possible.
Otherwise, if you have any feedback or PC-related questions, don't hesitate to reach out to us!