This is a recent repair. Customer called me with a situation where his motherboard went bad and he went ahead and replaced it. Now, the computer didn't want to boot into Windows. I agreed to take a look at it and see what I can do. I'll admit, I don't like coming into someone else's work. Either it be another tech or a customer trying to do it themselves.
But, I was surprised to see how everything looked when the computer was opened. The customer did a great job installing the motherboard. Everything was connected correctly. The only thing missing was thermal paste on the CPU. The customer admitted cleaning off some dry stuff from the CPU and heat sink. Yea, I'm pretty sure it was old. But, I told him I was glad he brought it in. Even if the computer booted into Windows, it wouldn't have lasted long. He would have dealt with random shutdowns from overheating. And, even worse, damage to his CPU and motherboard. So, it was a blessing that his computer didn't want to boot.
To start the repair, the first thing I did was apply thermal paste. The computer still didn't want to boot. So, I started to troubleshoot. I reseated everything. RAM, Hard drive, and Optical drive. I'm not sure which one did the trick, but as soon as everything was connected, it booted into Windows. I rebooted it a few times. Then, I ran hardware diagnostics and stress tests. All hardware passed. The customer was happy to have his computer back up and running.
When I followed up, he even sent me a photo of his computer at home. The PC is working great.
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