Vista - screen and game install/playing problems

Hi there, i decided to install my vista that i got which was the ultimat 64bit.

When i try to install certain games it will crash give me a black screen and
then if i push any buttons the screen will change colours and results in
restarting my pc. The game that i am trying to install is medal of honour air
bourne assult i had it installed on xp worked find.


my specs are.

Manufacturer: NVIDIA
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+, MMX, 3DNow (2
CPUs), ~2.0GHz
Memory: 2046MB RAM
Hard Drive: 660 GB
Video Card: NVIDIA GeForce 7900 GT/GTO
Monitor: SyncMaster 226BW(Digital)
Sound Card: NVIDIA(R) nForce(TM) Audio
Speakers/Headphones: Logitech x-230 speakers
Keyboard: Gaming Z-board and G-15
Mouse: G7 black wireless
Mouse Surface: desk
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3
(2600.xpsp.080413-2111)
Computer Case: Thermaltake Armor (black)