I don't know which cleaners you have used, but CCleaner & atf Cleaner from atribune are among the best. (NOTE: atf cleaner will not work with a 64 bit OS). That having been said, how much free space is left on the hard Drive? If you are somewhere south of 50% that could be a problem. Also how much stuff do have running in the background? You can deal with that by hitting the alt+tab keys and shut down stuff running in the background. Also Defragging is always helpful.
I have an ACER AST690-UP925A modem that is just over 2 years old. It has a 925 Pentium D processor, 1GB memory, 250GB hard drive with Windows VISTA. I use yahoo/mozilla firefox on this computer.
Lately this computer has slowed down on start ups as well as online or trying to read emails, I get a message up topside asying "NOT RESPONDING" and locks the computer up until it is free from loading or what ever it is doing.
My wife's son has had a lot of "shared" music on this computer along with leaving many albums on to which I told him to not leave on as many of those files are usually corrupt! I also think his I-tune that he loaded on here is a "bootleg" copy and is causing some of the problems!
I have used most CNET's virus protection, spy-ware, malware, and computer cleaners. None have helped get rid of this problem that I have with this computer.
Any ideas on what I should do?