I have had mu computer since November last year. Its a top of the range machine.
Windows 7 keeps freezing on me, and I have to force shutdown by pressing & holding the off button, as ctrl+alt+delete doesn't work (and nothing else does, either!).
There is nothing noteworthy in the application logs. There is no correlation between what I am doing on the machine and when the freezing occurs - it's totally random.
My boyfriend bought a computer at the same time as me (different brand) - and he is having the same exact problem. He is a computer tech guy, so he rebuilt his machine from scratch, but it is still happening regularly.
My machine cost a lot of money, and I'm scared it is going to get damaged because this keeps happening.