Let me start by saying that some PCs are so far gone, there is nothing we can do for them, short of a complete format and reinstall of the operating system. Anyone who has been exposed to Windows for a significant amount of time is aware that every installation of Windows naturally degrades along a logarithmic curve until it becomes virtually unusable. This is called it's half-life. Like I said before, if your PC is at this point, you need to wipe it out and start over. That being said, lets move on...