Thanks for your answers
So, I updated all of my drivers including the BIOS one, but the freezing continues. I have SP1 installed on my laptop (it already came with SP1 because it's a recent laptop).
I tried all of my recently installed programs and even unistalled a few but the freezing continuesmad
I'll try the Windows Startup Repair and I will post here the results
I would go with Kemicals overheating suggestion. You can download several hardware monitors on a demo basis for free.