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No signal after BIOS splash screen (baked it and it works now)

post #1 of 5
Thread Starter 
I think my 7800GT is dead

The computer worked when I put it away but it has been sitting for a while. I finally bought a monitor and hooked it all up but it doesnt work.

I turn on the computer and the DFI splash screen comes up then the monitor acts like i unplugged the cable. I tried two different monitors with the same outcome. I tried reseating my video card but it didnt help.

Any suggestions?

As a note this card was heavily overclocked and its been flashed with a custom BIOS with more core voltage for a while. So i guess it is possible that it has just chosen this time as when it wants to give up. It is just weird to me that the splash screen comes up but it wont display any BIOS info.
Edited by joman2055 - 1/13/11 at 5:16pm
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post #2 of 5
Thread Starter 
I think I will try baking it. Whats the worst that can happen?
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post #3 of 5
Thread Starter 
hahahahaha baked it and it works!

400 degrees for 8 minutes

EDIT

celebrated too soon. it works, but after a few minutes it drops the signal again.
oh well, i have a GTX 460 on the way.
Edited by joman2055 - 1/13/11 at 6:20pm
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post #4 of 5
Quote:
Originally Posted by joman2055 View Post
I think I will try baking it. Whats the worst that can happen?
If you bake it and get it working again always make sure to keep the temperatures on the card MUCH cooler than they ever were prior to the card failing. Once you bake a card, the solder is weaker and more susceptible to micro-fractures as the material expands and contracts during the course of game playing. The only way to prevent the card from quickly failing again is to keep the thing running VERY cool. That way, the heat does not make the PCB and solder expand and contract very much.

I baked a GTX 295 and an 8800 GT and both work now, but the only reason they continue to work is because I am keeping them as cool as possible. In fact, I've even under-clocked the 8800 GT to the specs of the 9800 GT EE green edition (only 550 MHz) just to guarantee that it runs as cool as possible.

See if you can keep the card running as low as 35 to 40 C on idle and only 55 C on a load.
Edited by Majestic_Lizard - 1/14/11 at 10:58pm
    
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post #5 of 5
Quote:
Originally Posted by Majestic_Lizard View Post
If you bake it and get it working again always make sure to keep the temperatures on the card MUCH cooler than they ever were prior to the card failing. Once you bake a card, the solder is weaker and more susceptible to micro-fractures as the material expands and contracts during the course of game playing. The only way to prevent the card from quickly failing again is to keep the thing running VERY cool. That way, the heat does not make the PCB and solder expand and contract very much.

I baked a GTX 295 and an 8800 GT and both work now, but the only reason they continue to work is because I am keeping them as cool as possible. In fact, I've even under-clocked the 8800 GT to the specs of the 9800 GT EE green edition (only 550 MHz) just to guarantee that it runs as cool as possible.

See if you can keep the card running as low as 35 to 40 C on idle and only 55 C on a load.
^^This, my 8800gts dies frequently and gets resurrected. I've been doing this for a year now, have baked it 50+ times and it still lives to see Crysis 2 . Temps need to be reduced, idle as well as load to keep it going for as long as possible before the solder cracks up again.
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