When I turn on the computer, it will POST, but then it will stay on the boot screen forever. The progress bar will keep on moving, but nothing else happens. I went to safe mode with networking and did a system restore. That did not work since it just stays at the boot screen and does nothing else. I then went to safe mode again and defragmented my drives and scanned/removed for spyware and viruses. That still did not work. I did notice that in system restore that "Software Distribution Services 3.0" was at many restore points. Anybody have a solution? Thanks in advance.