Solution: Plug in the USB flash drive, reinstall the system, and enter the BIOS to modify the startup item (press F 12 for the Dell notebook with this fault). After entering the PE (if there is no PE, please search how to make the PE system first), open the C drive of this pc and find the file C: \ Windows \ System32 \ Drivers \ Bootsafe64 _ ev.sys in this path. Just delete a * * * (bootsafe64_ev.sys and kavbootc.sys), and then restart (don't enter PE, unplug the U disk when restarting), and you can start normally.
Mechanical Revolution Titanium Tantalum is a home notebook computer launched in February 20 19.