I was playing a game when my PC suddenly turned off and now it won't turn back on at all. The power button does nothing, so I have no signs of life from it. I recently installed a Challenger 9070 graphics card, paired with an AMD 7700X processor, 6 fans, and a 650W power supply. Here's what I've already tried to troubleshoot:
1. I replaced the PSU with a higher capacity 750W one, making sure all wires were properly connected. It seemed like a power issue that could have fried the old PSU, so I thought this would fix it.
2. I unplugged everything, turned off the power, and pressed the power button for 30 seconds before plugging it back in, including removing the coin battery.
3. I swapped out my Challenger 9070 for a working 2060 Super, but the issue persisted.
There wasn't any overheating; the PC was cool, and I didn't notice any strange smells. I also tested the outlet with a lamp, and it works fine. I'm hesitant to do the paperclip test on the PSU as it seems risky.
At this point, when I press the power button, nothing happens - no lights or sounds. Does anyone have suggestions on what else to try before I take it to a computer shop for diagnosis?
3 Answers
It sounds like the new PSU might still be part of the problem, even if it’s new. Sometimes, even brand-new parts can be faulty. Have you checked all your connections? Double-check if the motherboard connections are secure. If you’re comfortable with it, you could consider reseating the RAM as well, as loose RAM can cause the PC to not boot at all.
Also, if the CMOS battery is still not working right, it's worth trying to replace it with a new one if you haven’t already.
It definitely sounds like a power issue, likely the PSU, but there could be other hardware failures at play too. If you have a spare motherboard or know someone who does, testing the components there could be helpful. Doing that would isolate the problem without the need for a full shop visit right away.
If all else fails, taking your PC to a tech shop is a solid plan, they might spot something that’s easy to miss.
Removing the CMOS battery for a minute or so can sometimes reset the motherboard and get it to recognize your hardware again. You've tried a lot already, but if you haven't swapped the CMOS battery for a fresh one yet, I highly recommend it. If that still doesn’t work and you’ve replaced the PSU and checked the other connections, it might be time to take it to Micro Center. They can do a diagnostic test and figure out what’s wrong, even if it costs a bit. Better than just guessing.
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