Win8.1 Update can't start? Emergency command to help repair

Win8/Win8.1 can not enter the system, how to fix?

In daily use, Win8/Win8.1 users will inevitably encounter the above failure to start the system, or the system starts Failure problem. In general, we can use Win8 system restore point recovery or system image backup recovery. But what if you don't have the above backup and restore points on your computer?

Do you need to reinstall the system? No, you can use Win8.1 installation image + emergency command to fix it, for example, the most classic The sfc /scannow command.

This fix command scans the integrity of all protected system files while replacing corrupted or anomalous version files with the correct Microsoft version. This time, the corresponding graphic operation steps are also arranged. The specific operation is as follows: ——

1. Download the Win8.1 system image, burn the DVD installation CD or make the U disk boot tool;

• After downloading the ISO, you can use the Rubik's Cube file verification in Rubik's Cube Master to get the SHA1, MD5, CRC and other check values, to ensure that the download is the official pure version, do not give the Trojan virus a chance

• Rubik's cube in the Rubik's cube master can start the ISO into a bootable USB flash drive to install, which saves the trouble of engraving, and can be shared with the little friends

• Rubik's cube computer The Rubik's Cube in the master can burn the ISO into a DVD disc, so you can run the installation directly.

2. Insert the Win8.1 DVD installation CD or USB flash drive, turn on the computer power, set the BIOS boot entry, and use the installation CD. /U disk boot;

▲When the above picture prompts, quickly tap any button

3. When the Win8.1 installation interface appears, use the key combination Shift + F10 to open the command window. ;

4, enter N in the command window Otopad (Notepad), open the Notepad function;

5, use the file open function of Notepad, select “ this computer & rdquo;, view the local disk partition situation;

Since Vista After /Win7, the Microsoft Windows system introduces a system reserved partition, which mainly stores startup files; the system primary partition (which is often referred to as the system disk), which mainly stores all system files of Windows. Ordinary users purchase new computers pre-installed with Win8. Local disks generally include partitions such as system reservations and system disks.

Advanced users generally merge system reservations into the system primary partition to generate a single partition.

6. For these two disk partitioning methods, we need to take different repair commands:

• Separate system reserved partitions

Then close Notepad and return commands. In the window, enter the following command to complete the repair.

sfc /scannow /offbootdir=C:\\ /offwindir=D:\\Windows

• The system reserves the merge to the primary partition

Then close the notepad and return the command. In the window, enter the following command to complete the repair.

sfc /scannow /offbootdir=C:\\ /offwindir=C:\\Windows

After waiting for the system to complete the self-test and repair work, Win8/Win8.1 users can start the system normally.