login problems on startup

Hi
i have login problems on startup
i start my pc ... it's almost getting to the aurora welcome-login screen but it stops. its not moving to the login screen
so i reset the pc
it gives me the startup repair...says all is ok it didn't find anything wrong
when i start the pc again its ok
until the next day when all starts over

Welcome
Lets try a few things in the order given to see if we can fix your problem
Run a full anti virus scan
Download and update the free malwarebytes then make a full scan
Try in safe mode. If it works try a clean boot follow procedure and solve problem
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
If clean boot does not help try an sfc command
http://www.vistax64.com/tutorials/66978-system-files-sfc-command.html
Go to event viewer to find errors.