Good day! I'm Raniel. I understand your frustration regarding this issue and I'll do my best to help.
Just to clarify, did you make any changes to your machine before encountering this issue (like installing third party apps, recent updates, etc..)? Do you also encounter the issue when you access your account via safe mode?. Please see the steps under "From the sign-in screen": https://support.microsoft.com/help/12376/window...
Go to Settings > Time & Language > Language > and double-check your preferred language under "Windows display language" > click on it and go to Options > ensure that you keyboard is also set to your preferred language. You may remove the other keyboards to isolate the issue as well.
Once done, go to Control Panel > Clock and Region > Administrative , then verify the system locale under the settings for "Welcome screen and new user accounts" as well as "Language for non-Unicode programs". You may also go to the "Formats" tab and change it based on your preferred display language.
Reboot your machine and check again.
Another option is to enable the built-in administrator account to isolate the issue
- On the Windows sign-in screen, press and hold the Shift key, then select Power > Restart
- After your machine reboots, click on "Troubleshoot" under Choose an option
- Click on "Advanced options" > select "command prompt"
- On the command prompt window, type
net user administrator /active:yes and press Enter
- Reboot your machine, then login to the built-in admin account, and check if you'll encounter the same issue.
Note: If you don't encounter the issue on the built-in administrator account, I suggest that you create a new user account (go through the steps under "My computer is in a workgroup") . Please refer to this article as a guide: https://support.microsoft.com/help/14039/window...
I hope this helps. Good luck!