Rename the Catroot2 folder and check if it helps:
a. Click Start, click Run, type "cmd" (without quotes), and then click OK.
b. At the command prompt, type the following commands, and then press ENTER after each line:
· net stop cryptsvc
· ren %systemroot%\System32\Catroot2 oldcatroot2
· net start cryptsvc
· exit
d. Restart the computer and check if the issue is fixed