Win8.1 Update can't start?

In the daily use process, Win8/Win8.1 users will inevitably encounter the above problems that cannot be started, or the system fails to start. 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;

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

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

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

Since Vista/Win7, Microsoft Windows system introduced system reserved partition, mainly store startup files; system main partition (everyone often Said system disk), 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 keeps merged to the primary partition

Then close the notepad and return to the command 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.