I have recently purchased a new computer and installed an NVIDIA G-GeForce 8500 GT graphics card, i have updated the latest drivers and made sure the inside of my computer is cool. Despite my efforts every problem I fix creates another one, this time its a snowy screen, with random pixels swiching places for no reason at all, programs will occaisonally just CRASH and then there are the times where th computer just shuts itself completely down. Im at a loss as for what to do, this computer is BRAND NEW and everything was woring fine till i installed my new card.

Any ideas?

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System Information
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Time of this report: 3/11/2009, 14:55:39
Operating System: Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.080917-1612)
System Manufacturer: Gateway
System Model: DX4200-09
BIOS: Default System BIOS
Processor: AMD Phenom(tm) 9150e Quad-Core Processor (4 CPUs), ~1.8GHz
Memory: 5118MB RAM
Page File: 1452MB used, 9008MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 10
DX Setup Parameters: Not found
DxDiag Version: 6.00.6001.18000 64bit Unicode

Computers & Internet - XFX - NVIDIA GeForce 8600 Graphics Card