I am having the following issue with my windows xp. My computer after a while for some unknown reason stops opening all applications. It is really weird. For example I turn my computer on and after about an hour or so (don't really know its completely random everytime) it won't open anything else. The other day I had task manager up before this happened and when it happened everytime I tried to open a program it showed up on the processes tab but still would not open. This happens under all users, and any existing applications that are already open when this issue happens work fine. Please help me. Thanks in advanced for your time.