An administrator account gives you privileges to configure your system tweaks and access system folders.
But sometimes you cant use the administrator account normally.
Some people report the administrator account disabled after upgrading while some people suspend the administrator account by mistake.

To help you out of this situation, you’re able to try the following methods.
Way 1.
It helps to fix plenty of problems on your setup, including your setup failure on starting up.

Power on your setup to enter the Sign-in interface.
In the following window, you should navigate toTroubleshoot > Advanced options > Startup parameters > Restart.
Wait for your rig to enter Safe Mode.

TypeComputer Managementinto the Windows Search bar and hitEnterto open it.
Head toSystem Tools > Local Users and Groups > Users > Administrator.
Double-press theAdministratoroption to launch the properties window.

You should uncheck theAccount is disabledoption.
ClickApply > OKto store your change.
After that, you canexit Safe Modeto see if you might sign into Windows normally.
If you are one of them, running Command Prompt can be another choice.
On the Sign-in interface, you should press and hold theShiftkey and chooseRestartfrom the Power menu.
Head toTroubleshoot > Advanced options > Command Promptto boot your system with Command Prompt opened.
Typenet user administrator /active:yesand hitEnterto execute this command line.
To avoid data loss, you should remember toback up filesin a period to other data storage devices.