try updating yr drivers to latest. did it happen b4 u got this card?

Usually it is the driver's problem..... if power supply not enough, how does it react? it just wont start?

http://www.nvidia.com/object/winxp_163.71.html
My View is little different from them, i suspect the PSU or compatible issue between the hardware rather than the driver...u should go to HARDWARE topic in this forum and ask this question...list out ur hardware spec there, maybe there will reply u much more than here...Nevertheless, go to the website above to download and install the driver first (remember to uninstall previous one before install new) to see the outcome, good luck...

If the card manufacturer set such clock speed, it means it will be no problem in regular use, so downclock ur card won help at all...if u eliminate the PSU possibility, then it might be other problems that will take a lot of time to troubleshoot...i suggest u a few steps here:

1.It might cause by poor air ventilation inside ur casing and causing overheat on your card. Try open ur casing and play the game, see whether got hang or not...
**i already open my cpu casing and play a games...but...still got hang bro...

2. If not the problem above, format ur PC and make a clean install of new OS, then install the most updated driver for ur mainboard, GC...
**this step...including 4 days ago...almost 4 times i format my computer...

3.Put ur card into different PC, if i no problem, then sure not the problem of the card itself.
**i dont try this steps yet...need a friend that has agp slot first...i try to do this step later on...
**yup...i've done this...but my friend comp also got hang...hehe...dont worry...my GC still under warranty...so, i've sent it back...

4.If not the problem above, then it might be the compatible issue between ur card and ur mainboard. Different brand of GC will make the different outcome when it slot into ur MB, although the chipset is the same Nvidia 7900GS...u should go to http://www.msi.com.tw website to download ur MB  most recently bios and flash the bios of MB, this is final step if the problem can't solve...
**ok...i'm surfing the msi homepage just now and still trying to find what u asked me to...mind if u send me the full link...so...i just click it and download it...

i suspect ur mainboard a lot actually...Nevertheless, try ur luck  
**u suspect my mainboard ah? aiyaaaaa...if my mainboard is the problem...then...have to upgrade to pci laaa...but...cost me a lot of money la...wait2...r u sure theres nothing to do my psu? because i've plan to buy raptoxx550w tomorrow...need ur suggestion... 

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Added on October 1, 2007, 5:35 pm
If the card manufacturer set such clock speed, it means it will be no problem in regular use, so downclock ur card won help at all...if u eliminate the PSU possibility, then it might be other problems that will take a lot of time to troubleshoot...i suggest u a few steps here:

1.It might cause by poor air ventilation inside ur casing and causing overheat on your card. Try open ur casing and play the game, see whether got hang or not...

2. If not the problem above, format ur PC and make a clean install of new OS, then install the most updated driver for ur mainboard, GC...

3.Put ur card into different PC, if i no problem, then sure not the problem of the card itself.

4.If not the problem above, then it might be the compatible issue between ur card and ur mainboard. Different brand of GC will make the different outcome when it slot into ur MB, although the chipset is the same Nvidia 7900GS...u should go to http://www.msi.com.tw website to download ur MB  most recently bios and flash the bios of MB, this is final step if the problem can't solve...

i suspect ur mainboard a lot actually...Nevertheless, try ur luck  

Bro, don wori, jz send back the GC 2 me for checking & warranty claim. It comes with 2 years warranty. Kindly notify me via pm after u post. Thanks!