Try these steps:
(1) Power off and then turn on the computer, and as soon as it starts booting up again, immediately start tapping F8 until you come to the advanced boot menu
(2) From there, select Repair your Computer > Click Next > Select the Repair your Computer button
(3) If it asks, pick your language and keyboard input method > Choose your user account, type your password XXXXX you have one and press ok
(4) If it tries to, let it scan and try to repair your issue automatically > If it asks if you would like to restore to an earlier date, use that > If it brings you to a recovery tools page instead like the one shown below, use system restore to restore the computer to working date.
Let me know if that clears it up, if not, we will try some other steps, just post back here first.