Windows 8 pro 64bit not starting

[Adam Simon]

I have a windows 8 pro 64bit computer and when I started it one day, it sad that it is signing in,but then it signed me out after the Welcome logo and gave me a blue screen with the date and the hour on it.When I unlocked it (like on a windows 8 phone, the lockscreen slided up) it signed me out again, and this is happening in a loop for an eternity.
Can you guys tell what is the problem and how can I solve it? Do I have some kind of virus?

 

[PhatLloyd]

- Enter your login information
- Spam Ctrl + Alt + Del when you see the "Welcome" message
- Select Task Manager
I had to do this repeatedly until, by chance, the system did not immediately sign me out. Once you reach this point do the following:
- In Task Manager, select File -> Run new Task -> enter explorer.exe
- If a File Explorer window opens, click "System Properties" in the bar below the menu bar
- System Properties -> System Protection -> System Restore

copied from: http://answers.microsoft.com/en-us/windows/forum/windows_8-security/immediate-log-out-on-log-in-windows-startup/33e6acfd-75c1-465e-863b-8d91f620a6c9

 

[Adam Simon]

Thanks a lot ! It worked just like you described.I appreciate that you answered that fast and thanks again! I`m really happy now.

 

[PhatLloyd]

Close the thread please.