Having hardware problems!

I’ve been having some weird problems lately…

It usually happens 5sec-1minute after I’ve opened windows (after I’ve turned my computer on).
So windows starts… and suddenly I hear a restarrting-sound inside my computer… The computer is not restarting but something inside it is…
This happens after I’ve started windows or if I want to run a file on me hard drive… (after starting windows)

I have a feeling it might be the hard drive but I’m not sure (I’m hoping that is the hard drive… only one with warranty ;))

So after I hear the sound everything crashes and the blue screen pops ups saying:
this: http://www.hot.ee/syko2/error1.JPG
or
this: http://www.hot.ee/syko2/error2.JPG

What could be wrong? My computer is at the edge of crashing all the time…
It works fine for afew days and the it starts again… crash… crash… crash and then it suddenly stops and there we go again… crash… :puzzled:

PS! It did that before and after reinstalling windows…

Please help…

Me is desparate over here :jail: