I v had it 3 years no problems up till now, its a sve1513b4f,I5, 6 gb ram, 2.60 ghz, 500 gn free memory Recently the battery died and I barely if ever used the battery, right now its constantly overheating the fans on full when all I have running is this web page, recently got an external sound card don't know if that's a factor, its booting up very slowly, Recently I got a message to repair drivers on the c drive which I did, still booted up very slowly after, I have had it on for hours on end everyday for music and surfing the web, please advice what I can do to repair, a system restore or clean out the fan?