Computer building problems

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ToddJ

n00b
Joined
Nov 26, 2006
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My computer stopped working again so I decided to finally finish building my new computer. However, it seems that now the computer starts up, the fan runs, but there is no output of a video signal from the VGA output (which is built into the motherboard.) Then after a few tries, when try starting the computer again, the fan comes on for a few seconds then the fan stops. any ideas on what it might be? i took out the battery to reset the CMOS, but that didn't help. I also read the manual to see if there might be anything that I might have forgetten but no luck. any suggestions? i just hope I didn't fry the CPU when i put it in.
 
ToddJ said:
My computer stopped working again so I decided to finally finish building my new computer. However, it seems that now the computer starts up, the fan runs, but there is no output of a video signal from the VGA output (which is built into the motherboard.) Then after a few tries, when try starting the computer again, the fan comes on for a few seconds then the fan stops. any ideas on what it might be? i took out the battery to reset the CMOS, but that didn't help. I also read the manual to see if there might be anything that I might have forgetten but no luck. any suggestions? i just hope I didn't fry the CPU when i put it in.
Click to expand...

unplug everything except the power to the motherboard and see what happens. If you have more than one ram chip, remove all but one.
 
Bigbacon said:
unplug everything except the power to the motherboard and see what happens. If you have more than one ram chip, remove all but one.
Click to expand...

I tried that, and the fans (both CPU and power supply) turn on for a couple of seconds and then promptly turn off. any other ideas? i am desperate to get this thing up and running as soon as possible. thanks!
 
Does you motherboard have a EPS12V 4-pin or 8-pin 12V connector? Make sure it's firmly connected. I've had similar issues when I was replacing something on my board and forgot to firmly press it in all the way.
 
Also, make sure you put in all of the motherboard standoffs correctly.
That is, all the standoffs match up to a hole with a screw, not touching the mobo.
 
Holy crap!...so I just bought a new power supply from Best Buy...just to rule out the possibility that the power supply got fried and after I hooked it up, there literally was a spark that came off the cpu/heatsink fan! I unplugged it and then tried it again a little while later and the fan would turn on for a little while, stop, and then come on again....and it would keep doing this until i shut off the power supply switch.
 
Is the heatsink seated correctly? I'd take it out of the case and try it on a piece of cardboard or something.
 
check the bottom of the board and make sure there aren't any burnt/crispy parts.

Actually take everything out and check for burnt/crispy parts.
 
Sparks are bad, mmmmkay?

Tear it down and check that mobo. Sounds like the mobo is grounding out on the case. Make sure there are no "extra" brass standoffs screwed into the case/mobo tray. Only the ones used to hold the mobo in place are needed. Put it all back together, slowly, and carefully. Make sure the 24pin and 4/8pin power plugs are firmly seated. Sometimes giving them an extra little push is a good thing. Also after inserting those plugs check each wire going to the plugs to make sure the pins didn't come out of the plug when you were inserting it. Stick with the bare minimums, 1 stick of ram, no HD/CD drives.

If you do all that and still can't get it going I'd say the mobo is toast.
 
HydroBudz said:
Sparks are bad, mmmmkay?

Tear it down and check that mobo. Sounds like the mobo is grounding out on the case. Make sure there are no "extra" brass standoffs screwed into the case/mobo tray. Only the ones used to hold the mobo in place are needed. Put it all back together, slowly, and carefully. Make sure the 24pin and 4/8pin power plugs are firmly seated. Sometimes giving them an extra little push is a good thing. Also after inserting those plugs check each wire going to the plugs to make sure the pins didn't come out of the plug when you were inserting it. Stick with the bare minimums, 1 stick of ram, no HD/CD drives.

If you do all that and still can't get it going I'd say the mobo is toast.
Click to expand...

Do it all outside the case, and......take the heatsink off, take out the cpu and replace, reseat the HSF with new interface material, and try to reboot/POST with just the bare minimum.....cpu,hsf,RAM amd GPU......you have a short somewhere....or a bad MB.

Please list your components.
 
Yeah, like the others have said, time to strip it down and triple check everything!!
 
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