“Fatal Error. Attempting to save in C” while using Maya 2012

I’m getting a fatal error with Maya 2012.
It says
“Fatal Error. Attempting to save in C: Users/DIR/AppData/Local/Temp/XXXXX.ma”
When I tried to uninstall – reinstall, I get this error:
Exception code: C0000005: ACCESS_VIOLATION – illegal read at address 0x00000134
Fault address: 6BDEE08F in C:Windowssystem32aticfx64.dll
My system specs: Asus G73, Windows 7 64bit.
I hope someone can help.
