Press the "F8" key on your keyboard when you cold boot your computer, you will be faced with a black screen with white text with the options of Safe mode, blah blah, what you need is "Command Prompt" high light this with your up and down keys on your keyboard and press ENTER, you should be able to msconfig through that. Hope all goes well.
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If it wont boot how do I use msconfig
So then how do I use msconfig