Installed new GPU, wont boot

August 8, 2010 at 17:47:16
Specs: Windows vista 32-bit
I replaced the ati radeon hd 2400 with an nvidia geforce 9800gt without uninstalling the previous drivers, and now my computer wont boot. I am not able to get into the bios and i already tried reseting cmos. After I reset the CMOS, the lights on the computer case indicate 2 and 4, meaning a possible graphics card failure (if i restart the computer without resetting cmos, the lights 1, 2, and 3 are lit, meaning another failure has occured)

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August 8, 2010 at 18:45:11
There was no reason to reset the BIOS. Hopefully you know your way around the settings & can correct everything later? Simply clicking "load defaults" is not the way to go if you want best performance.

Anyhow, if you made no other changes, the problem is the card. Either it's defective, not fully seated in it's slot, or your power supply can't handle the added load of a gaming card. The 9800GT requires a power supply of at least 400W with 26A or more on the +12v rail. Most of them also require a 6-pin PCIe plug connected to the rear of the card.

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