WINDOWS8 response after installation of TORTOISESVN

Because of the work required, yesterday installed the TORTOISESVN 64-bit version, did not restart immediately.

Then, after opening the page in IIS, the browser is blank, there is no Web page, no address, nothing. At this time did not think it might be tortoisesvn problem. Later I really do not know what the reason, just want to restart the test. Restart, enter the desktop for about 3 seconds, on the blue screen, reported that the computer has a problem, need to restart. Then restart, then blue screen, restart the screen. Later entered the Windows 8 startup option, choose to restore based on the restore point, there is an option to install TORTOISESVN, that is, the restore point is to uninstall SVN, try it.

Select, enter, enter, restart.

Back to normal.

Cause, unknown. Install it later and see if that's the reason.