Hey everyone! I think my PC suffered a power surge a couple of years back. When I tried to power it on, it shut down almost immediately, and I had to reset the circuit breaker to get it running again. Since then, the PC wouldn't turn on at all, so I replaced the power supply. Now the system powers on, but I'm not getting any POST (Power-On Self-Test).
I've done a few troubleshooting steps, but I might be overlooking something. Here's what I've tried:
- Switched the positions of the RAM and tested each stick individually.
- Disconnected hard drives and fans, only leaving the RAM, GPU, CPU fan, and HDMI cable connected.
- Reset the CMOS settings and even replaced the CMOS battery.
- Reseated almost all components except for the CPU (I did get a new CPU cooler around the same time as the power supply).
I even took it to a repair technician who suspected that something might have been damaged during the power surge—possibly the CPU, motherboard, RAM, or GPU, or maybe more than one part. But he couldn't pinpoint the issue.
Here are my specs: MSI 970AG43, AMD FX6300, 2x8GB RAM, and an AMD RADEON 470 8GB.
2 Answers
Hey! It sounds like you've done a lot of great troubleshooting already! Since you're not getting any signal on the monitor, it might be worth checking if the GPU is seated properly, or if it could be an issue with the motherboard itself. Sometimes, even if the power supply seems to work, there could be faults affecting the motherboard. If possible, try booting without the GPU by using the onboard video, if your motherboard has it. It could help narrow down the issue a bit! Good luck!
If you're still not getting any response after checking the GPU, I would recommend testing with another power supply if you have access to one, just to rule that out. It’s surprising how a seemingly good power supply may not be delivering the right voltage to all components. Also, have you checked for any physical damage on the motherboard? Sometimes you can catch a broken trace or bulging capacitors if you look closely!
Thanks for the tip! I’ll do a thorough inspection on the motherboard and see if I can find anything amiss. I'll also look for another power supply to test.
Definitely give that a shot! I had a similar issue and it turned out the GPU was the culprit. Switched to onboard graphics and it worked like a charm!