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#21
Use the F8 Advanced Boot Options, choose System Recovery Options to trigger Startup Repair at boot.
Why would you want to choose Startup Repair at boot.
May I suggest you focus on the practices which assure you'll get and keep a perfect Clean Reinstall - Factory OEM Windows 7 since if you do then you'll not need Startup Repair as a boot choice. Since perfect installs is a specialty of these forums we can help you do this so that the horse doesn't have to push the cart.