Seriouc PC Issues Please help

[cloud1161]

Ok vgcharterz, I have a serious laptop problem on my hands.  I have Sony Vaio FW model and it's about 3 years old.   It is running Vista Home Premium(which I believe is the cause of many of the issues). It has an Intel Centrino 2 Processor with a Radeon graphics card (not sure the make or model).  I have had nearly no problems with it until yesterday.  Whenever it boots in normal mode, it works fine for about 5 minutes but then nothin responds but the mouse still moves around so it doesn't completely freeze.  The only way to shut it down is to manually hold the button.  Now if that isn't bad enough, whenever I boot safe mode. the system used to hang at the crcdisk.sys file but I fixed that by deleteing a few system files.  That worked for about 2 times in safe mode, but after that safe mode would automatically restart after logging on.  I tried draining the battery completely and restarting it, but that was no luck.  I did manage to run CCleaner during one of the successful safe mode attempts, but that did almost nothing.  The only thing I can think of is do a complete system restore, but I would really like to at least get safe mode working so I can transfer some of my files to a disk.  I'm guessing some of the registry files are screwing up or the operating system needs reinstalled but the laptop did not come with a Vista disk.  Any ideas will be greatly appreciated.  I am currently at a complete loss...