I recently got a new video card and tested it out; worked fine. I updated drivers, rebooted, worked fine. Then, after setting up resolution and display settings, worked fine. My problem begins when I try to reboot again; now, the card refuses to display. Help?

My current theory is that the card is simply trying to output to something nonexistent; while I was adjusting the display settings, I find that it was configured to extend the display across two moniors; one of whih did not exist. I set it to display to only the existent monitor and changed the resolution, before rebooting. At this point, there was no longer any display.

ATI Radeon 4870 X2, Windows 7

windows settings have nothing to do with no video output.

If your card doesn't have any video output, then your card is dead, your motherboard is dead, your monitor is dead, your power supply is dead, or something in your BIOS got set up incorrectly, though I don't know what. Reset the bios and hope you can see the POST.

Try it on another computer if you have one, or bring it to a repair shop and ask them if they can test the card for output.

Just now, I made sure all of the wires and connectors were seated properly. Also, swapped my power cable for the one that came in the PSU's box (old cable fit in too snug). Unplugged everyhing except serial head keyboard, ethernet cable, and DVI head. Started up fine, had input.

Started up USB mouse; success.
Started up with headphones plugged in; success.
Started up with USB printer and USB mic; failure.

Removed USB mic, started up; failure.
Removed USB printer, started up; failure.

uhhhh

Started up with only keyboard, ethernet, and DVI; failure.

...

Unplugged computer, discharged, restarted with the control 1 (keyboard, mouse, ethernet, headphones, DVI); failure.
Unplugged, discharged, restarted with control 2 (keyboard, ethernet, DVI); failure.

FFFF

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EDIT:

Oh cool I got it to work again.

Though I bet if I try to restart, it'll stop working.

I suspect that the 6/8 PCI-E might be the problem. Maybe it gets unseated or something during off time? Doesn't seem like that's the case though.

Post has been edited 2 time(s), last time on Jan 24 2011, 5:40 am by Sand Wraith.