PC on Windows Vista OS

Hi Guys,
I greatly appreciate your time to read this and hope to have your inputs. I have a PC on Windows Vista OS and had been trying in vain to update it for the past 2 years. I did everything that have been advised to solve the issue like virus scan, system restore, and restoring it back to factory settings, but still the problem persist.
The PC safety number worked with it too but still couldn't solve the problem. During the factory setting restore, it was stuck for 4 hours on this command:
C: usersownerappdatalocalmicrosoftwindowstemporary internet fileslowcontent.ie5scoyopgp.
I would be very thankful to whatever idea or advise that you could give me to help me out.
