After a recent power outage, my PC behaves strangely. It attempts to power on briefly for about 2 seconds before shutting off. I noticed that the CPU indicator on the motherboard is red, and while the CPU and GPU fans are spinning, the system doesn't stay on. I tried removing and reinserting the CMOS battery, but now there's no response at all. When I plug in the power cable, the motherboard lights flicker momentarily, but nothing else happens. I've checked to ensure that all power cables, including the 24-pin and 8-pin CPU connections, are secure. The power button doesn't respond at all either. What could be wrong here? I'm planning to buy a new PSU soon; could it also be the motherboard? I'm confused as to why it completely stopped working after that CMOS battery reinstallation.
2 Answers
I've been in a similar situation before. After a brownout, I had to replace both the power supply and motherboard. Initially, my PC would just boot for a few seconds before shutting off completely. Sometimes both parts get affected when power issues occur, so keep an eye on that.
It sounds like the issue started right after the outage, which usually points to power issues. While replacing the power supply is a good idea, it’s tough to determine whether the PSU is the sole culprit or if another component might be affected too. You could try a basic paperclip test on the PSU to see if it turns on, but keep in mind this won't check if all the voltage outputs are functioning properly.
I get your concern, but I also don’t see why it stopped altogether after messing with the CMOS battery. It did at least boot for a moment before making that change.
Thanks for the input! Just to clarify, replacing the PSU alone didn’t do the trick for you?