Sony Laptop Unexpectedly Turns Off

Hello, I need some help asap since I am going away tomorrow and won't have much time to fix this problem on my trip!

I have had this Sony PCG-K33 laptop for quite a while now, and lately, it has became really slow. Whenever I touch the heatsink, it is also finger-burning hot. I have tried cleaning the dust out of the fans and reapplying new thermal paste to the processor (a P4 3.06GHz btw), but whenever I try to run UBCD4WIN and zero the HD or run intensive benchmarking tools, the laptop instantly turns off. Is there anything else I can do in order to save this laptop from its misery, and hopefully not have to dig its inevitable grave in my backyard?

Also, I have tried creating two WinXP home disk (one with SP3 slipstream, and the other without), and I keep getting the same problem. Whenever, the window files load up initally and just before the setup screen appears, I get a BSOD saying "process1 initialization failed". However, if I use my original Windows XP Media Center 2005 disk from my main computer, it goes into the setup without a hitch. Anyone know what to do about this (I am using this guide btw: http://www.tacktech.com/display.cfm?ttid=415).

Any help would be greatly appriciated!

Thanks,
Brook

 

I have also recently upgraded the RAM and the HD, so I don't think that is the issue.

 

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