No video signal after soft reboot

[gabemcg]

Hi,

I just upgraded my PC (basically built a new one), and I've been experiencing a frustrating issue.

Whenever I reboot from windows, the PC powers up (fans/lights) and appears to boot, but I can't get a video signal (DVI). I'm pretty sure it isn't booting all the way to windows.

All I've figured out as a work around, is to turn off the switch on the back of the PSU, and wait for the capacitors to discharge on the mobo. After doing so, the machine powers up when I flick the switch, and boots normally

I've never seen this before, and tried searching with no luck. Any help is greatly appreciated.

It seems similar to xellos' cold boot problem, but no matter what state it is in, it will always power up, just sometimes with video and sometimes without...

 

[Jiggz]

Have you tried a different PSU?

 

[gabemcg]

Originally posted by: Jiggz
Have you tried a different PSU?

no, but it is a relatively new Antec TruPower 2.0 480w, It shouldn't have any problems in that dept.

 

[ATFMalicious]

I had the same problem just recently.

I could get it to work, but sometimes that would seem to take I don't know how many restarts before it finally completed loading. Sometimes if it was successful it would boot up until the POST page and I would see that my CPU speed was reduced by almost half. If I went into BIOS and made sure everything was OK, or even loaded defaults, 9 out of 10 times I would get this message in red about not shutting off the computer while bios saves my settings, even though I pressed save. But for the most part I would experience the symptoms as follows:

On most restarts, the LED on the monitor would sometime go green then the screen would show "no signal" then go dead. Other times, it wouldn't even do that it would just start out with the "no signal" then drop. The computer CPU fan, all other fans, HD's and other drives would power on just fine, but everything would stall at that point. A previous motherboard I had listed the problem as d1 - init power something or another. I figured it was a psu problem. I have recently decided to upgrade and finished installing the components a day ago. I had run the new stuff for a good day when the problem happended again. So, last night I figured out that after all the component changes I have made in an upgrade - mobo, cpu, ram, psu, hd's . . . I never changed out the video card. I had a PNY 6600GT and I traded it out for an old MX card I had in a drawer which worked fine. Could restart and start the computer fine for at least 20+ times. Never saw it until I stuck the 6600 back into the machine and instantly the problem was back.

Hope that helps you.

 

[Pwnbroker]

I do user support at a hospital, and if you're using an lcd display, try this next time. Unplug the lcd's power cord for a few seconds, then plug it back in and it should get a signal. You may have to reboot pc at the same time. I have this problem all the time on the floors and that has always fixed the problem.