new vid card freezes Vista's Aero

Custom / CUSTOM
January 18, 2009 at 12:15:32
Specs: Windows Vista, Core 2 Duo 6300/1.86
I bought a 8800GT to replace an aging Radeon X700 Pro. I installed the card and the newest drivers, but when I tried to enable the Aero theme, the computer stopped responding, even the mouse cursor. I have already reseated the card and made sure that the PSU is strong enough. My X700 Pro did not do this with the Aero feature enabled.

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January 18, 2009 at 12:50:54
"and made sure that the PSU is strong enough"

At least 400W with 26A on the +12v rail? Good quailty/brand name unit, not a generic POS?

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January 18, 2009 at 13:13:49
Sounds like the card isn't getting enough voltage to run in "3D mode". The Aero GUI is Direct3D-rendered.

I used to have similar problems with 3D applications on 440BX boards powering newish cards. Most of the time, I was able to get the app to run by increasing the AGP voltage.

Stuff to try:
-Make sure that your power supply has at least 26 amps on its 12v rail (or 17+17, if it's a dual-rail model)

-Make sure that a 6-pin PCIe peripheral power cable is plugged into the card. Oh, and make sure that it's a true PCIe plug, not one of those PCIe to double Molex (hard drive power) adaptors. I've had problems with those things, especially trying to power high-end cards. If your power supply does not provide a true PCIe power cable, buy a new one.

-If your motherboard has a 4-pin molex connector near the PCIe slot(s), make sure that a power cable is plugged in. These EZ_Plugs, as Asus calls them, assist in powering high-end cards and SLI configs. While my Asus manual states that the EZ_Plug is only required for SLI, it's probably best to have it plugged in--even if you don't have two videocards installed.

-If all else fails, look for the PCIe voltage selector in your BIOS setup. Bump it up a notch.

Homebuilt projector:
Samsung 1080p panel
Pixelworks controller
2 HDMI, 2 Component, 1 VGA
Homebuilt enclosure
120" 16:9 screen
Connected to: HTPC w/ BD, satellite receiver, XB360.

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January 18, 2009 at 22:35:46
Yes! That was it, the molex on the mobo was unplugged. I didn't even know my mobo had one of those till today. Thanks so much!

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