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After I install virtualbox, my pc hang at reboot.

After sometime, it prompted me more setting, I choose to restore to a certain point, but it fail to restore because of antivirus.

How to disable antivirus. I am worried my data and installed software is lost.

How can I solve the problem. It take hours to see the restore mode.

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Try using windows 8 repair disc......... – user208657 Mar 19 '13 at 15:46
    
Any luck booting into safe mode? – MDT Guy Mar 19 '13 at 15:51

reinstall in incompatibility mode for earlier version of windows. right click on setup -> open properties -> click on compatibility tab -> Tick Run this program in compatibility mode for -> select windows 7 or earlier version on which it your application worked successfully.

            -->> apply -->> Ok

run the setup to install again.

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