Hello, thank you for reaching out to Microsoft Q&A.
As the Work account is disconnected from your device, you will no longer be able to sign in to the computer.
If it is your Personal laptop, you will have to do a full system recovery and set up Windows with your Personal Microsoft account.
Note: Running a System recovery will reset your PC to factory defaults and erase all data on the HDD.
To run a System Recovery -
- Turn on your computer. When you see your PC manufacturer's logo or the Windows logo, press and hold the power button on your device to turn off your computer.
- Repeat the same steps 2-3 times.
- Then, next time, allow your device to fully boot into the Windows Recovery Environment (WinRE) page.
In WinRE, select Troubleshoot > Reset this PC > Remove everything, then proceed with a local reinstall.
Resetting the device may take some time to complete. Once done, set up Windows with your Personal Microsoft account.