Geforce 9800 gt dell optiplex 755 doesnt work

billytrippin

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Jan 10, 2011
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So I upgraded from a Radeon HD 4600 card to a Gforce 9800 gt. I have a Dell Optiplex 755. Now when I install it, make sure the dvi adapter is connected. Power up and monitor sits at a orange circle and no display. The tower sits at a green power light, with a 2 4 alert light but works fine with other card. This has happened when i had the original 4600 set with a different dvi adapter on. The 9800 dioesn't have a normal vga port. Anyone hear of these 755's having issue with digital cards?
 

billytrippin

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Jan 10, 2011
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I did, but regardless i don't even get to the OS for that problem. It sits with no display, then with a green power light on the actual tower, and a orange no activity light on the monitor. Just got a new dvi plug gunna try that
 
The switch is for the input voltage. In the US household electricity is 115volt in Europe 230 volts that is the reason for the switch it does not add any power to the PSU!
Ok what is the size of the PSU in watts should be on a sticker somewhere on it?
 

Dreamwind

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Feb 2, 2011
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I've got a 9800gx2 had it for about 2-3 years now died on me yesterday it seems they are somewhat prone to heat causing faulty connections.

I stripped it and baked the PCB's in the oven at 200 Degrees for 10 mins new paste and a good clean and she's fully fuctional again.

Not something for the faint hearted and don't even think about it if the cards under warranty.

If it's out make sure you get the card tested in another machine to establish it's dead if so baking method might bring a new lease of life back to it.

Worked for me and many many many others.

But its a definate last try nothing to loose thing.