I have a PC with an Asus motherboard running Windows 7 Pro. Yesterday I installed latest Windows updates, restarted, and shortly afterwards hibeated the machine.
This moing on un-hibeating I got a black screen with:
The system found unauthorized changes on the firmware,operating system or UEFI drivers
It also said:
Go to BIOS Setup > Advanced > Boot and change the current boot device into other secured boot devices
The only way I was able to get it to boot was by changing the BIOS secure boot OS to 'other OS' i.e. I think this means secure boot is effectively disabled.
There have been no hardware changes to this machine recently (last thing I changed was adding more RAM about 3 weeks ago, and it has successfully rebooted multiple times since then). There is no CD/DVD or bootable USB device connected.
I'm running a full MSE scan just to be sure / paranoid. Is it possible the Windows updates caused this? Should I be conceed about disabling secure boot? I've tried setting it back to enable however the original message reappears.
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