Try the 163.75 WHQL drivers for one. Check the card temp right after it crashes.
What is the rest of the hardware involved (Motherboard, Power Supply, Memory (MFG, Type, Amount) CPU)? Potential for a failing power supply, do you have power issues in your area?
Pull up 'System Properties', go to 'Advanced', select 'Startup and Recovery'. For the section marked 'System Failure' if there is a check mark in 'Automatically Restart', remove it and see if your crashes give you a BSOD (Blue Screen Of Death). If so, write down what it says (even if you can't make heads or tails out of it. No offense, but some people DO like to omit what THEY think might not be relevant when it could very well be useful, and I don't know your tech level.)
Check in your main FS folder for an errorlog.txt. Make sure it's emptied and saved blank and on the next crash, see if it has anything in it. If it does, post it. (let us also know as well if it stays blank or plain does not exist at all).
If you set up a video profile for FS, remove it or reset the Global back to default settings. If your card has a factory overclock, hit up nVidia's product page for what it's non-overclock values should be and set the card to that instead.
If you have a VIA chipset board AND your BSOD references the nv4_disp and an infinite loop, you may have a known VIA bug that there is an unofficial patch for.
Make sure your motherboard drivers are up to date according to the CHIPSET Vendor's files, NOT the motherboard manufacturers drivers. (EX: If you have an ECS nForce board, use the nVidia nForce drivers, not the ECS package. The CHIPSET vendors drivers are baselined for what the chipset HAS to support to be a member of that chipset, where as the manufacturers drivers may be a multi-board universal package that may support conflicting auxiliary item configurations or make allowances for them.)