The blue screen displays the error code stop: c0000218 unknow hard error c0000218 unknow hard error.
Refer to Microsoft's official solutions http://support.microsoft.com /? SCID = KB; en-US; 156640
The main cause is that the Registry Write error is caused by an illegal shutdown. (Power failure, forced shutdown, etc ).
However, Microsoft's solution cannot solve the problem.
The reason is that the software file of the Registry (under c: \ windows \ system32 \ config \ System) is damaged. When backing up copy, the "Cyclic Redundancy" check error is displayed.
Solution:
(1) UseUltraiso+ Use winpeboot. ISO to create a USB flash drive.
(2) Set USB-HDD priority in BIOS boot.
(3) Use the above USB flash drive to start. after entering the system, find it in the USB flash drive.Finaldata. Find the c: \ windows \ system32 \ config \ System \ Software file in the directory, select and right-click the file, select "Restore", and save another location. Delete C: \ windows \ system32 \ config \ System \ Software file; copy the recovered file to c: \ windows \ system32 \ config \ System
Boot successful.
(TIPS: the USB keyboard must be set in BIOS before it can be used in DOS)