Computer restarts before POST

J

jwitherow

n00b
Joined
Jan 27, 2008
Messages
13
Hi. I have a computer I built almost 2 years ago and it's been fine without any issues until now. The other day I was on it and it just turned off. Whenever I try to restart it now it'll turn on for a second or two and then shut off and automatically keep repeating that till I flip the switch on the PSU. It doesn't turn on the monitor either. I tried a different PSU, I tried to unhook my graphics card, I took out my me RAM, I even unhooked my reset switch. None of that worked. So then I tried to clear my CMOS. If I have the jumper on the setting to clear it then it won 't turn on at all and clearing it didn't work. BUT if I put the CMOS jumper on before it turns off it stays on it just doesn't turn on my monitor.
my specs are
e8400
Gigabyte GAP35DS3L
HD4870
4 gigs of OCZ RAM
 
Last edited:
Do you hear any error beeps without RAM installed?
Do you hear any error beeps without the vidcard installed?
Do you hear any error beeps without the vidcard nor RAM installed?
Have you tried the barebones bench test outlined in the Basic Troubleshooting Guide sticky thread?
Which PSUs did you try?
 
There have not been any beeps whatsoever. There aren't any noises out of the ordinary. As far as the PSU I tried I just went to Best Buy and picked up a Thermaltake Black Widow 550 watt PSU. It was the best one they had that I could find. But being as it's a brand new PSU from a different manufacterer and behaves exactly the same I'm pretty sure it's not a PSU issue. Also I did try the barebones test,
 
check the power cord, if plugged into a power bar did it just die out as well? Make sure the unit is gettig power and isolate it to the pc itself.
 
It does the exact same thing plugged straight into the wall. I even used a different power cord.
 
Is there a system speaker/buzzer plugged in?

No beeps without the RAM nor Vidcard means the issue is either with the CPU, Mobo, or PSU.
 
try a good psu first, lol. well, if you think that Tt was good, then i guess the next step is to try another mobo with your chip and psu.
 
Well it wasn't great but it was better then the Dynex one they had and it should atleast do something different but it did the same exact thing.
 
could be bad contact between a heatsink and a mobo chip. Look for any visual indications of a bad heatsink mobo connection.
 
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