This video shows how to fix a corrupted user profile in Windows 8.
When the message
The User Profile Service service failed the sign-in. User profile cannot be loaded.
displays, follow these steps to fix the user profile.
Shutting down and restarting the computer might resolve the error
and allow you to log on and access the user account.
First, click the Power icon and select Shut down.
Wait five seconds, then press the Power button to turn the computer back on.
Log on to the user account that previously failed.
If you are able to log on, the issue is resolved.
If you are not able to log on, the user account might be corrupted.
You can create a new account and copy the files from the corrupted account.
Follow these steps to create a new user account.
In the Windows 8 Start screen, type cmd to open the Search charm.
Right-click Command Prompt from the results, then click Run as administrator.
If a User Account Control message appears, click Yes.
At the command prompt, type net user username password /add.
Then press Enter.
Enter your username and password when prompted.
When finished, The command completed successfully text is shown.
Close the command window.
You can copy files from your old user account to your new user account.
Log on to an account other than the one you just created or the old account.
In the Windows 8 Start screen, type control panel,
Then select Control Panel from the Search charm results.
Click Category, then select Large icons from the drop down menu, then click Folder Options.
Click the View tab, then click to remove the check marks next to Hide extensions
for known file types and Hide protected operating system files.
If a Warning box appears, click Yes.
Click OK to close the folder options box.
Navigate to the original user account folder on the drive where Windows is installed.
Select all of the files and folders in the old account folder,
then deselect Ntuser.dat, Ntuser.dat.log, and Ntuser.ini.
Right-click the desired file, then click Copy.
Navigate to the new user account folder on the drive where Windows is installed.
Right-click in the white space, then click Paste.
Log on to the new user account and find the files you copied.
If the files transferred, continue to delete the old user account.
If the files did not transfer, repeat this step.
Follow these steps to delete the old user account.
Log on to Windows 8 as an administrator.
In the Windows 8 Start screen, type control panel,
Then select Control Panel from the Search charm results.
Click User Accounts And Family Safety, then click Remove user accounts.
Click the old user account, then click Delete the account.
Click Delete Files.
When the Confirmation Deletion message appears, click Delete Account.
You can find additional helpful videos at hp.com/SupportVideos
and on our YouTube channel, youtube.com/HowTo4U.