salazar23seeker

My pc always not responding after or more than 30 minutes,when i refresh it from the desktop all my icons disappear and it will not respond again so i need to shut it down from the avr..how to fix this plss?? Operating system:Windows 7 Ultimate (32 bit) Service Pack 1 System root: C:Windows Available physical memory: 3327 MB CPU: AMD Phenom II X2 550 Processor Drive Info: C: 219.63 GB Internet Explorer: 11.0