When I plug in a fan into my mother board, my CPU fan and my GPU fans start spinning at high speed. But it won't boot

[ross-wylie]

So I just started getting in to PC gaming and I wanted to custom build myself a new computer. I had a 2 year old Asus essentio desktop computer with an i5 CPU clocked at 3.0 GHz. So I stole the mother board and the CPU out of that and moved it into my LEPA lpc 501 computer case I got from frys. Then I put my XFX radeon R9 270 for my GPU. I have an ASUS 350 watt psu that I got from my friend. The PSU ran with a nvidia quadro, so I reckoned it ran with a smaller graphics card as well. Me and my friend put it together and we double checked that everything was plugged into the right place. We tried to boot it up, but nothing happened. The mobo had a green solid light on it and everything. So since it wouldn't boot we decided to go ahead and hook up all the fans on the mother board then. And we got all of the fans hooked up besides one. And so I found a random UNLABLED 3 pin socket on my mother board and plugged my fan into it and my CPU and my GPU fans started to run at top speed. So we plugged it in to a monitor and we got no signal sadly. So we searched on the internet for what caused this. And we read on a web site saying "remove your RAM and then re-install it" so we did that and it worked! It booted up and everything was working the way it should! But then I decided to plug the fan into that unamed socket again and it won't boot anymore. I took the RAM out again multiple times but it still won't boot. Someone plz help me I've asked all of my friends that know computers but they said they don't know.

 

[pug_s]

350 watt psu might be a little underpowered for the r9-270. I suggest you upgrade it to at least 500w.

 

[ross-wylie]

I ran it on a 200 watt PSU fine for 2 weeks tho... I think I figured out my problem. I forgot to put standoffs under my mobo and it was shorting it out. So I'll do that and see if that works