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After I was hit by malware (from an email I opened) I downloaded Microsoft Security Essentials. Scanned and and cleared my computer. I shut down for a restart but now Windows won't launch.

It gets to a loading screen but shuts down before the login screen. I've tried running in Safe Mode etc. and it still won't launch.

Any ideas?

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Please try to launch again, but press <kd>F8</kbd> at start and choose Disable Restart on System Failure and say what is wrong. –  William Hilsum Feb 7 '11 at 21:52
@wil Amen, this would be quite helpful. –  Kyle Feb 7 '11 at 22:11
does it try to load the desktop then reboot? We need more info on exactly what it does when windows tries to load. –  Moab Feb 8 '11 at 1:30

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