What am I doing wrong with my PSU?
December 10, 2009 1:36 PM Subscribe
PSU was missing from computer. Bought a new one, now it gives me one continuous BIOS beep when I turn it on. What have I done wrong and how do I fix this?
posted by battlebison to computers & internet (4 answers total)
From what I understand, one continuous beep means it isn't getting enough power. I have a 450W PSU brand new from NewEgg and this computer is fairly old, so I figured it would have been good enough! I forget the specs exactly, but I think it's a single core 3.8 GHz AMD processor and it has a GeForce 7800 GT as its graphics card. Everything else about it is very pedestrian.
There is the usual ATX power slot on the motherboard as well as what looks like a 4-pin slot near it. It looks like this:
There are two 4-pin connectors coming out of the PSU: one attached the main plug and one that just kind of hangs out on its own separate from any other cable. The computer will only get as far as turning on and beeping at me if I have either the main plug in on its own or it and the loose 4-pin plug. It doesn't do anything at all if I use the 4-pin plug attached to the main plug.
Does it matter that the plug coming from the PSU seems to be missing a pin? [:::::::.::]
Help me revive this old computer!
Thanks for reading this ridiculously long explanation of what is probably an easy problem.