Do a BIOS recovery so you can get the machine useable again. you may have a corupted file in the UEFI??
Robert you're right.
I put the BIOS into 'Configure' mode and it booted straight into the BIOS setup.
You must use the BIOS jumper header. Simply removing the power and battery doesn't work.
If you Reinstall the UEFI software ,Just Make sure you do it off line with all security software disabled . Good Luck Glad I could Help.