USB ports stopped working and now my computer won't turn on.

[Skesh]

So one of my front USB ports stopped working the other day so I switched everything to the back. Yesterday my keyboard just randomly stopped working and then did it again today. I unplugged everything today and made sure everything was plugged in and snug, did a quick air can cleaning and then plugged it all back in and now my computer won't turn on at all. Any thoughts? Is it my Mobo?

Components:

Case: Fractal Design Define R4
Mobo: AS Rock z68 Extreme3 Gen3
PS: Corsair TX650
Processer: i5-2500k

[barricade_]

hey Skesh,

I had a similar issue just a month ago, USB wasn't working sometime and one day computer didn't boot. It turned on but after a few seconds it turned off. I had to flash BIOS, PC works fine now.

[braeldiil]

Won't turn on in as in what? No power at all (no fans, no lights, etc)? That's not a USB issue - depending on how involved you got check all the power switches/breakers (including the power supply), make sure all the motherboard connections are in the right places and seated (fans, case connection, power supply connection, etc). Basically, check and redo everything in the power chain from the wall to the case switch to the motherboard.

If you mean it won't boot, then it might just be a missing keyboard from your USB failures. Only thing you can really do to check that is make sure the keyboard is plugged directly into the motherboard (less that could go wrong).

[Skesh]

sorry, no power at all to the computer. No fans no lights nothing now. I've checked the power chain and everything seems fine.

[chazus]

Double check to make sure both the 24 pin power to the motherboard is plugged in, AS WELL AS the extra 4pin towards the top left of the motherboard as well (some newer/better boards might have an 8pin)

[barricade_]

that sounds like the motherboard or PSU.

[Manataurus]

sorry, no power at all to the computer. No fans no lights nothing now. I've checked the power chain and everything seems fine.

Sounds almost like you had a problem with your PS and it finally just went to shit. The original problem could have been because the PS couldn't produce enough juice to keep those front ones active. That's my opinion. It's also easier to see if it's your PS, as opposed to your MB.

[Ghostpanther]

I had a computer which did the same thing. Turned out it was the PS.