computer keeps loosing programing sometimes it will reload sometimes it cant detect the hd or the cd/rom player the hd tests good as does the memory cards only thing i can find is processor is overheating -heat sink has been cleaned fans working and even has a house type fan blowing into open case to help cool it sometimes it works ok for a week sometimes 15 min. and it goes down again then i have to completely reload windows and sometimes it refuses to take the program says files are corrupt the next time i try it may take one of my windows programs- xp- vista or windows 7 is there any cure or should i junk it and get another computer?