PC won't open. Working fine yesterday.

rueness

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Mar 13, 2014
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Hello everyone. So the story, my PC was working perfectly yesterday, and was properly shutdowned. Today, when I try to turn it on it won't. What happen was it will turn on for a a second or two then it will shutdown. Seasonic M12 II PSU, Gigabyte Z87X.
 


I'm not really a PC expert so I don't really know how to check connections, but my PC wasn't moved or something, it was where I left it the last time it wa working. But I opened the casing, the mobo's on button's light is on. When I press the main turn on button, the fan and everything else lights on then a second or two it's gone, but not the on button of the mobo. It will take a few seconds before I can try to open it again.
 

How do I check the connection? Also when the first time I opened the casing one of the things attached to the PSU was somehow removed. I forced it back in I think it was the second one form the right that was somehow remvoed. I had a difficult time putting it back in, like something was blocking it.
 

I'm really no expert about PCs so I don't really know how to do that. But as I have explained day my other post. Everything's seems to be working fine before I press the on button, even the fan, then after I open it, a second or two it's off. Also I just noticed, there is some kind of a clicking sound from I think the PSU... But I hear a clicking sound in those few seconds it's open.