Disk boot failure in Windows 7 64-bit after installing the latest NVIDIA drivers

Posted by Domchi on Super User See other posts from Super User or by Domchi
Published on 2011-06-26T06:31:40Z Indexed on 2011/06/26 8:24 UTC
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I successfully installed the newest NVIDIA drivers (275.33) in Windows 7 64-bit and rebooted afterwards just in case. After the reboot, I got an error about missing MBR. I disconnected the slave disk so that Windows doesn't get confused and got this message:

DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER

It seems that Windows doesn't recognize the main disk anymore. I booted from Windows install disk but the main disk doesn't get listed as possible Windows locations to repair, and I can't get to it from the recovery prompt.

The BIOS does recognize it, and I'm able to see it if I run diskpart - however "detail disk" in diskpart says that there are no volumes on the disk. I also tried bootrec /FixMbr without effect, and bootrec /FixBoot which gives the error message:

Element not found.

What else can I do? Why would diskpart say there are no volumes on the disk?

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