help me with my POS sony vaio

[ActionJeff]

I bought this piece of junk for $3k less than half a year ago. It's always had lots of small problems that have come and gone and never ran particularly well, but lately there have been huge problems.

The computer randomly shuts down. It is running extremely slowly. The screen constantly flickers and sometimes freezes. It's almost impossible to play poker on this thing.

A couple people have told me to reformat the hard drive, but im in europe and don't have any of the discs or anything that I would need, and have no idea how to do this. I've ran tons of virus scans, spyware, disabled all of my startup programs, tried turning off all of my anti spyware stuff, but nothing seems to help.

Any ideas?