Computer Assistance Needed: Computer Freezing

[Fail Hard]

Recently my friends and i have put together a project for the summer we built a computer everything seems to be running smoothly except that when i play games i freezes... i have been searching for the problem but still no success hopefully one of you will be able to help here are the specs of my computer:

OS: Windows Vista Home Edition 64-bit
Processor: AMD Phenom(tm) 9850 Quad-Core Processor 2.50 GHz
Ram: 4.00 GB
GPU: 2 Nvidia Geforce 9600 GT Sli enabled
Motherboard: MSI K9A2 Platinum Edition
HardDrive: 500 GB
PSU: 650 Watt
Willing to answer any questions i checked the fans and the temperature of everything seems to be fine any suggestions?

[smoggy]

A couple of things I would check
If the graphic card has a fan check it is clean and running
Check your card drivers are up to date
I note that you are running vista 64 bit (drivers are much scarcer in this version)

[Fail Hard]

I actually put a fan between the two graphic cards but i will check if its clean or not it should be i've only had the computer since Wednesday D:

[Fail Hard]

anyone else have other suggestions?

[Mickha]

Check the games manufacturers web site for patches/updates for Vista.
Check your Motherboard manufacturer for updates.
Check your memory with memtest or other utility, or try removing it and inserting it one stick at a time and then playing the game.
Try leaving the panels off your computer to allow it extra cooling.
Have you also checked the settings in the games as they usually allow you to set the 3d effects and graphics card settings.
What games are you running? Are you experiencing problems with every game or just a few?
What have you got running in system tray when playing the games? Try disabling any anti virus, unless playing online, and check task manager by pressing control Alt and Delete on your keyboard, abd shutting off anything that could be causing the problem.

[Fail Hard]

i will do that but i am playing Unreal Tournament III, Crysis, Wow, Half-Life 2, and Counter Strike Source but it only freezes on crysis obviously... half-life has done once and Wow usually freezes D:

[Fail Hard]

Do you think my computer is over-heating? should i turn the smart fan on? I have all the fans on high theres 4 fans i wouldn't see why its over-heating though T_T

[Mickha]

Doesn't the MSI motherboard have a utility for monitoring the temperatures?
I used to have an older MSI motherboard, in a computer I built, which had such a utility, check the Motherboard drivers and utilitied disc.
I'd always check the games sites first to see if anyone else is experiencing freezing problems with Vista, and check the games manufacturers sites for updates and known problems.

[Fail Hard]

I think i figured out why when we were putting in the two sticks of ram my friend set it to single channel do you think that might be the problem i am not that computer savvy unfortunately D: and i checked the temp and they seem to be fine... Could someone tell me how i would go about switch the channel from single to dual? thanks in advance

[gormo]

Think its the graphic cards m8 i reciently built a similar system running xp pro all the latest drivers and game patches, my system blows the graphics out to a blank screen.The only way to get it back is to reboot the pc ,on checking the event logs no problems are shown, the games ive had probs with r two worlds,c&c generals,zero hour,dungeon siege everything else runs smooth with all settings at max. Ihave contacted nvida and am awaiting a reply with reqards this problem will post the reply after its recieved regards gormo