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2 votes
0 answers
99 views

When I turn on my PC,why it spins for a second then restart automatically? (when I unplug and plug in back the power cable)

I have recently built a custom PC, it works (I think) very well other than the issue below. Since I just built it, I was still playing around with that (changing fan positions, adding new fans, etc.. )...
1 vote
2 answers
152k views

How to plug power/reset buttons from case to motherboard leads?

I have a motherboard I salvaged from a pre-assembled computer. Except now I'm trying to use it in my own custom build. The problem is, this motherboard doesn't have any documentation because it was ...
47 votes
14 answers
64k views

Is it safe to power on a motherboard outside of its case?

I have a new motherboard which needs a BIOS update to support a new CPU. Thankfully I have an old (compatible) CPU handy. My plan is to install the old CPU, update the BIOS, then install the new CPU....
3 votes
1 answer
111k views

Where are the power switch pins?

I’m custom building a PC. I’m using an MSI Z97 PC Mate motherboard. The big power supply is an EVGA 430W. It’s all plugged in, and I hit the switch but it doesn’t do anything. Both JPWR 1 and 2 are ...
1 vote
1 answer
1k views

Why does my computer hesitate to turn on?

I just built my first computer, but every time I hit the power button everything goes on like it was starting up, then everything turns off for about 3 seconds, and then it turns on and stays on. Is ...