++***I assume your are in the Advanced start-up environment***. ***Use the following steps to use Start-up Repair***++***:***
# Select ***Troubleshoot*** button.
# Select ***Advanced options*** button.
# Select the “***Start-up Repair”*** button (''skip step 4 if it doesn't apply to your setup'').
# If necessary, select your account and type your account password.
# Click the ***Continue*** button.
If the above doesn’t help do the same as above but this time select “***System Restore***” from the “***Advanced Options?***”