Whenever I try to take a screenshot of anything, I experience a giant lag spike of 1-2 seconds and it does sometimes lead to death and it is quite annoying at sometimes

. If anyone has any tips to remedy this would be great
Computer Specifications
2.0 GHz Core 2 Duo T7300
2GB RAM
GeForce 8600GT GDDR2 512MB (Driver Ver. 7.15.11.6759)
Windows Vista Ultimate 32-bit OS