Three commands to solve Windows 7 can not start

                  Compared with other versions of Windows, although the stability of Win7 system is unquestionable, due to sudden power failure, virus damage or installation or uninstallation of some special software, Win7 bootloader will not work properly. At this time, Win7 will not start normally and report "0xc000000e" error at the same time.

In the case of such a situation, most people will choose to reinstall the system.
In this state, pressing the F8 shortcut will not bring up the Win7 advanced boot menu, and of course, it will not enter the safe mode. Perform the repair operation. Not only that, but various system maintenance tools such as WinPE that have been installed with the menu option added to the Win7 boot menu are also not working properly. Isn't it the only way to reinstall the system at this time? The answer is of course no, the author will share some of his experience with everyone.
First modify the BIOS to set the USB flash drive as the first boot device, then use the USB flash drive version of WinPE to boot the system and run the command prompt tool under WinPE system; then enter the following DOS command at the position where the cursor is located (per To enter a DOS command, press the Enter key):
cd c:\\windows\\system32
bcdedit /set {default} osdevice boot
bcdedit /set {default} device boot
bcdedit /Set {default} detecthal 1
In the window shown at right, the meaning of the first DOS command is to switch to the "C:\\Windows\\System32" directory (Win7 is installed by default to the C drive, if everyone's Win7 is installed to other hard disk partitions. Please change the drive letter C to another corresponding drive letter. The meanings of the other three DOS commands are: set the hard disk partition where Win7 is located as the default (ie C drive, the same below), set The partition where the Win7 boot file is located is the default, and the computer is started from the default location.

Enter the command in turn
After completing the above operation, you can log in to Win7 normally after restarting the system. In this way, we do not need to reinstall the system for a small startup failure. If you have encountered such a startup failure in the process of using Win7, you may wish to refer to the method described in this article, I believe the problem can be easily solved.