05-17-2013 02:03 PM - last edited on 07-19-2013 03:40 PM by AmandaM
Try performing all the steps mentioned here to troubleshoot the issue: https://us.en.kb.sony.com/app/answers/detail/a_id/39757/c/65%2C66/kw/39757
Follow all the steps mentioned here to reset the BIOS: https://us.en.kb.sony.com/app/answers/detail/a_id/35240/c/65%2C66/kw/35240
Follow all the steps mentioned below to access the safe mode:
Pressing the F8 key for 7-10 seconds when the VAIO logo appears on the screen at the start-up to access the Advanced Boot Options > highlight the Safe Mode option and press the Enter key.
Next, go through the steps provided here to perform the system restore in the Safe Mode here: https://us.en.kb.sony.com/app/answers/detail/a_id/31528/c/65%2C66/kw/31528
Next, perform a complete system recovery to restore your computer to the factory settings. Restart the computer, keep tapping the F10 key continuously, press enter key at the edit boot option, select start recovery wizard and click on skip VAIO Care rescue (If you do not wish to back up data) to start the system recovery process.
Note: It is required to take backup of all the data before performing the system recovery as it erases everything from the computer.
If the issue persists, contact Sony Service Assistance Team to initiate a repair: http://esupport.sony.com/US/p/service.pl
Note: If my post answers your question, please mark it as an "Accepted Solution."