Follow these steps to have Windows show all available users at the login screen instead of the previous user who was logged on.
Open Regedit and go to:
Change: Enabled to 1
Problem with this is the user SYSTEM automatically changes the value to 0, so we need to block it:
2a. Now right click on UserSwitch key itself and click on Advanced – Disable Inheritence – Convert inherited permissions into explicit ones for this object.
2b. Now, change the “Owner” at the top to Administrators.
2c. Now go to permissions and set Administrators – Allow – Full Control
2d. In the same box, select System – Show Advanced Permissions and check all DENY’s except “Check Value”