Hi, and thank you for asking your question.
First off, please restart the laptop and tap down the F8 key repeatedly right after the laptop powers back up, until it brings up a black Advanced Options screen.
There, do you see a "Repair your computer" option listed?
Please reply back to me below. Thank you.
OK. Now, please press and HOLD down the Power button for atleast 15 seconds, until the laptop switches off completely (with a tick sound.)
Next, press the Power button one more time to switch the laptop back on, and start tapping F8 (on your keyboard) repeatedly at bootup.
Does this bring up an Advanced Options screen this time?
Keep me posted.
Sorry, I'm not available to take phone calls at the moment; however, please carry out the steps as requested in my last reply, and let me know accordingly. Thanks!
OK, that's good - allow me a couple of minutes; typing up further directions now.
Now, please select the "Repair your computer" option, and press ENTER.
Next, follow the on-screen directions until a list of recovery tools comes up (if prompted for a startup repair at any time, click NO).
From the list of recovery tools, select "System Restore".
In the System Restore window, click "Choose a different restore point" (if available), and click Next.
Now, TICK the "Show more restore points" checkbox, and then select any restore point dated BEFORE you started having this issue with your account. Click Next > Finish.
Allow the restore process to complete and restart normally - check if you are able to logon to your account all right thereafter,
Do let me know how it goes, please. Thank you.
Please reply back to me on this page itself; were you able to get the system restore to complete all right?
Do let me know.