When I log off, log on, restart, shutdown, or power on, my Windows flashes the log off, log on, shutdown, or power on windows 7 screen and noises twice. So I hear two logon sounds, two logoff sounds, it looks like explorer is started twice (or restarted) as the taskbar flashes...
What is wrong with my computer?
EDIT: I just ended up reinstalling windows after formatting my hard drive. The problem is fixed now.