Whenever I start up my laptop, the Windows 10 logo pops up then goes black. After a while it comes up again with the message “Preparing automatic repair.” Then goes onto “Diagnosing your PC.” Or whatever then goes to the Repairing disk errors part.
Last time I waited and it was not done after about 2 days.
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I would suggest you to perform an automatic repair and check if it helps. You may use Windows 10 installation disc/USB to perform automatic repair by creating a Media Creation Tool.
How to Perform the Automatic repair:
a) Boot the computer through the installation media. When your computer starts, wait for the manufacturer logo to check the option for boot menu, it will usually be F12.
b) The boot menu key might differ with each manufacturer. If you are unable to find the boot menu key, you may refer the user manual.
c) Restart the computer, when the manufacturer’s logo is displayed, keep pressing the Boot menu option key to enter the boot menu and change the boot option to CD\DVD ROM.
d) After you boot your computer, a black screen appears with gray text “Press any key to boot from CD or DVD“. Press any key.
e) Select the correct time and Keyboard type.
f) Click Repair your computer in the lower left corner
g) Click on Troubleshooting, advanced option and then click Automatic repair.