XPS420 Freeze issue
I've got a Dell XPS 420. I've bought it on July 2008 with 3gb of Ram memory,a Nvidia 8800GT 512mb and Windows Vista Home Premium 32 bit(Recently I've upgraded it to Windows 7 Home Premium 64 bit)
About 3-4 times a day it completely freezes and I must shut down and restart it.
How can I solve this awful problem?