Laptop owner said he ran Windows Defender and it cleaned up something (I don't know what). Now it boots to a black screen.
I looked at Disk Management and it's not right:
I don't see any marked as System. How do I fix this?
Boot to Macrium recovery and select other tasks / repair (or rebuild) boot.
You can make Macrium recovery USB on other computer or use Kyhi's rescue disk.
Check for malware too.
I tried Macrium before I posted this, it didn't help. I should have mentioned that, sorry.
I did fix this by using KYHI's Rescue WinPE disc then running the bootrec commands from a command prompt.
bootrec /rebuildbcd
bootrec /fixboot
bootrec /fixmbr
I think the first one did the trick but it now boots okay so I'm happy.
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did you check what went wrong? What's in Windows defender logs..
