I have a Swift 3 that dual boots Windows and Linux.
Everything has been working fine until now. However, after the August Windows update (specifically, KB5041585) upon bootup this message appears:
“Verifying shim SBAT data failed: Security Policy Violation
Something has gone seriously wrong: SBAT self-check failed: Security Policy Violation”
The recommended temporary solution is to go into the BIOS and disable secure boot until Microsoft supplies a remedy. However, I cannot access the BIOS. Pressing F2, Fn+F2 or F10 just keeps the screen frozen, sometimes displaying the above message. Sometimes the laptop shuts down after displaying the message.
I can actually get to both the Linux and Windows systems by pressing F12 and then selecting which to boot to. But I cannot get to the BIOS by any know means. Please advise.
[Edited the thread to add model number to the title]