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Windows 7: Changed BIOS now will not boot windows 7 Ultimate

22 Dec 2012   #11
Microsoft MVP


As it's often difficult to reach the CMOS battery in a laptop (google your model to see) then I would make every effort to get the disk to boot. Make sure the disk in question is bootable in another PC just to be sure.

If all else fails I would boot the maker's HD Diagnostic extended CD scan to test the HD, then use the disk's Quick Wipe function to wipe the HD. Another option is free Partition Wizard CD which boots itself.

This will cause the Win7 DVD to boot itself so that you can Clean Reinstall - Factory OEM Windows 7 with the licensed version.

My System SpecsSystem Spec
22 Dec 2012   #12

Windows 8 Pro (32-bit)

you might be able to drain the CMOS battery...

On some systems you can drain it by removing the main battery and ac cord, then holding the power button for 30 seconds.
My System SpecsSystem Spec

 Changed BIOS now will not boot windows 7 Ultimate

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