My HP laptop with Windows Vista was working perfectly fine until one day it suddenly wont boot after I turned it on. I didnt remember installing any programs after this occured. I just removed the battery to turn it off and tried to turn it on. Message appeared that an error occured and there was an option to repair it. I chose repair but after loading windows file with the command propmt, it went blank. I waited for like 15 mins but nothing happened. Tried to remove again battery and truned it on. I thought of doing System Restore with command prompt in Safe Mode but still the same - it will load Windows files then will trun blank for minutes. I dont know how to fix this. Please help. Thanks a lot!!!