How To Fix: Missing or Corrupt ntoskrnl.exe File

1.keyboard issue
solution: Swop out with new keyboard

2.miscellaneous corruption
solution: safemode

3.Corrupt boot.ini file
solution: bootcfg /rebuild

4.Missing or corrupt ntoskrnl.exe file
solution: expand D:\i386\ntoskrnl.ex_ C:\windows\system32

5.Corrupted hard disk drive or severely corrupted winodws
solution: Endter recovery console type: chkdsk /r