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#11
What do you mean -
1) You cannot get into the Backup & Restore screen. (type "backup and restore" in start box)
2) You cannot enter "change settings"
I use McAfee Total Protection 2010 for 12 months without a problem but I never ran any "clean" type utilities from it. Anything's possible but I find it hard to see why McAfee would interfere with 1) or 2) above.
You appear to have tried the other suggestions that is use "services.msc" to turn McAfee off. There are a couple of the McAfee components you can't turn off. - Correct?
You have tried a Clean boot as per these type of instructions
Unable to complete backup - Error 0x80080005 - Microsoft Answers
Correct?