BeeCeeBee is right, we need more info - the fact that its freezing could be anything.
Is the PC a bought one or a custom build?
Freezing can be related to internet settings, RAM, GPU, CPU, MOBO drivers.
We need more to go on, the only thing that helps at the moment is the blue screen.
Stating Hardware or Software so have you installed any new hardware?
have you installed any new software?