I took my computer apart last night to clean it good, everything went well, and i even did better wire routing than normal. But when I pressed the start button on the computer, there was no post. So I turned the computer off, then tried to take out the CMOS battery and then put it back in after a few seconds. Then I tried it again, it still wasnt working. So then I took the computer out of the case and put it on some cardboard, trying to rule out any shorts. I only had the GPU, RAM, and CPU in. Tried it again, still wouldn't boot. Tried without the GPU, tried without the GPU and one stick of RAM, tried with no RAM, nothing. I jumped the PSU and it was working fine so I can rule out that it is not the PSU. Could it possibly be a dead CMOS battery? I remember having this problem before and using the CMOS battery from a different computer worked, but now I don't have an extra. I'm not sure what else to try.
CPU - AMD FX 6300
CPU Cooler - 212 Evo
Motherboard - MSI MS-7641(FX)
PSU - EVGA SuperNOVA NEX 750W 80+ Bronze Certified
RAM - 1x8GB PNY XLR8 - 1x4GB No name brand
GPU - Sapphire Radeon R9 270X 2GB Vapor-X Edition
Edited by decifer1834, 16 August 2017 - 09:38 AM.