Hi, Can you recommend a tool which will scan my hard drive and tell me if there are any faults with it or if there are any problems with my installed ram - and any of my removable drives for that matter? My system was fine until last Sunday night when all of a sudden, I just couldn't load Windows. I've lost loads of data and had to re-install Windows and all the programs I'd installed before, but I haven't a clue why my system went down in the first place. Hours before it happened I'd run a check for viruses and spyware on the TrendMicro site, an Ad-Aware and Spybot scan, none of which found any problems. I'm thinking there could be a hardware problem somewhere but I don't know how to determine whether thats the case or not. Everythings been running fine for four hours since I got my system up and running again, but I'd love to pinpoint any faults (if there are any) before everything crashes again. Someone mentioned Tech Tools to me - I think that was it - has anyone ever used that?...cheers