So for the past few months my desktop machine has been randomly rebooting, never staying on for more than an hour(same on both xp and linux) Now this was an old 250w PSU that i had ripped out of a dell machine after my original psu died, but continued to serve it purpose for me for about a year without any problems. So I figure it could be a PSU issue and order a new one, Diablotek DA Series 400-Watt ATX Power Supply PSDA400 is what I choose mainly due to price, as I'm not looking to spend a lot just to get my old machine back up and running.
So I get it and plug it all in, power it up, all fans and lights go on, but there is no beep followed by screen/usb response, it just stays black and response less. At first I thought it might be the video card as i noticed the the fan on it wasn't spinning(due to some big bits of dust which i took care of) got a nice clean video card now but that wasn't it, also tried onboard graphics to verify that it wasn't the gpu as it showed nothing as well. Is there some reason that installing a new PSU would result in this? I'm thinking maybe it could a faulty PSU as i put the old one back in and it worked fine. Does the fact that the psu/cpu/gpu fans/lights all turn on necessarily mean that the PSU is working fine?
This is mobo: TForce 6100-939
Thanks in advance to anyone that can give me some insight ray:
So I get it and plug it all in, power it up, all fans and lights go on, but there is no beep followed by screen/usb response, it just stays black and response less. At first I thought it might be the video card as i noticed the the fan on it wasn't spinning(due to some big bits of dust which i took care of) got a nice clean video card now but that wasn't it, also tried onboard graphics to verify that it wasn't the gpu as it showed nothing as well. Is there some reason that installing a new PSU would result in this? I'm thinking maybe it could a faulty PSU as i put the old one back in and it worked fine. Does the fact that the psu/cpu/gpu fans/lights all turn on necessarily mean that the PSU is working fine?
This is mobo: TForce 6100-939
Thanks in advance to anyone that can give me some insight ray: