I have a fairly old PC that has given good service, was originally Vista OS but now runs Win 7. I Haven't had any real problems until two days ago when the HDD busy light is on constantly. When it comes to loading up games or anything that takes a bit more CPU usage it starts to hand. I have checked task manger, an there are no real processes running there, it some times goes up to 4% and the drops. I have rebooted, run updates and cleared temp internet files and cookies.
Can anybody give any diagnostics or suggestions I can use please!