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Get yourself a surge protector for where you connect your computer to the power. That will protect it against voltage/current variations.
You can still use online chat - just pick another country or look here: http://service.mcafee.com/faq/country.html
Try uninstalling everything via Control Panel/Programs/Uninstall a Program, then run the MCPR cleanup tool available HERE and reboot.
Reinstall from your online account.
Lastly, your Windows 7 should have Service Pack 1 installed, if not already there is help with that HERE.
Thank you i will do as per suggestion