USB Shortcircuits or fries motherboard/psu?

PapadomanGR

Honorable
Feb 13, 2014
7
0
10,520
Hello,
1 week ago I finished building my pc. Everything went according to plan, and the bios showed up. I setup everything and installed Windows. As I was setting the date and time though, I inserted a usb sitick in a usb 2.0 port. as soon as the stick touched the port, the pc turned off and refused to boot again. In the beggining I thought that my mobo or cpu was fried, but when I returned them to the shop for testing (cpu, mobo, gpu and ram but not the cpu cooler and the psu), everything was working. I didn't suspect it could be the psu, because it passed the paperclip test (although the fan was really silent and was not spinning at full speed, but I guess it's because nothing else was connected, so there was no reason to be at full speed. it's a corsair CX600). Was it the psu's fault and if I change the psu and computer turns on, is there a potential risk of having the same problem when using the same usb port? Note that I connected the keyboard and mouse normally in different ports and nothing happened.
 
which usb port were you trying? one on the case? or the motherboard? if on the case, please make sure you have the usb header plugged correctly into the motherboard. if on the motherboard, then you have a faulty motherboard and or you have installed one too many motherboard standoffs in the case
 

PapadomanGR

Honorable
Feb 13, 2014
7
0
10,520


It was on the motherboard. As I mentioned, we tested the mobo with the default cpu cooler and another psu and it worked normally, so I have eliminated the possibility of a faulty mobo.