Windows 7 SP1 I hope? Please go to Computer in your Start Menu, right-click it and select Propertis, that will tell you.
Also check that you have Internet Explorer 10 installed by opening IE and going to Help/About.
The blank interface is due to system corruption and can be cured, see this document: https://community.mcafee.com/docs/DOC-3000
Viruses usually don't cause this but you might want to check for issues using Malwarebytes Free, see the last link in my signature below. To keep it free of charge do NOT accept the free trial.
hi non of this has worked and i cant unintall becuase when i click uninstall on control panel the white box just appears and nothing happens....
Also when i turned my pc off and then back on it was stuck on 'black screen' for about an hour the keypad didnt work and the lights were on but nothing happening.
after trying to update a program now saying jscript has a problem
You have a problem with your operating system. If I were you I would scan using Stinger, RootkitRemover and Malwarebytes Free, all listed in the last link in my signature below. Note to keep Malwarebytes free of charge do NOT accept the free trial. Just remember to update it before using each time.
If those don't find anything then phone (or use online chat, both free of charge) Technical Support. See Useful Links at the top of this page.