I have a 3 yr old HP Pavilion with 128 mb of RAM running on Windows 2000, 10 gig hard drive with 38% free. Haven't had many problems, but lately nearly everything has gone wrong. I can click on files in Windows Explorer, the hourglass appears for a second then nothing happens, won't let me move or copy files, programs won't open, some open and give error messages and shut down, among other things. There is a memory checker installed on my computer which shows less than 45% free memory, which will start to drop very quickly. Any help will be greatly appreciated.