Thanks for the reply.If you are unable to enter safe mode by tapping F8 as the pc is starting up - the ''user profile'' is either damaged, changed by malware or other issues.
Do you have the Win 7 install DVD?
What is the make and model number of your pc as there may be a recovery partition allowing you to reset the pc, back to factory settings?
If you reset the pc - all your data and files will be overwritten and deleted.
https://www.sony.co.uk/electronics/support/articles/00070113If Windows does not start:
Start or Restart your VAIO.
Press the F10 key several times while the VAIO logo is displayed (see figure 1).
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