Ive been using the Win10 TP on my SP3 for awhile now. I will be using the device for business starting next week and need to roll it back to 8.1.
I went through all the steps of downloading the recovery image from Microsoft's website and copying it to a fat32 formatted hard drive. When I got to boot the drive off the SP3 I get a "Secure Boot Violation. Invalid Signature Detected. Check Secure Boot Policy in Setup." Seemed simple enough. I get to "bios" and disable secure boot. When I go that, save the changes and then reboot my SP3 immediately blue screens. I can't get back into windows and can't figure out how to boot off the USB from here. Sometimes it will go into Bitlocker recovery, then tell me there is a problem and crash.
If I turn secure boot back on I can get back into Win10 without issue. Any ideas? No I do not have a backup on the SP3 already - I installed Win10 TP clean from USB.
I went through all the steps of downloading the recovery image from Microsoft's website and copying it to a fat32 formatted hard drive. When I got to boot the drive off the SP3 I get a "Secure Boot Violation. Invalid Signature Detected. Check Secure Boot Policy in Setup." Seemed simple enough. I get to "bios" and disable secure boot. When I go that, save the changes and then reboot my SP3 immediately blue screens. I can't get back into windows and can't figure out how to boot off the USB from here. Sometimes it will go into Bitlocker recovery, then tell me there is a problem and crash.
If I turn secure boot back on I can get back into Win10 without issue. Any ideas? No I do not have a backup on the SP3 already - I installed Win10 TP clean from USB.