|If you're seeing that your title is inappropriate - the computer is booting fine and Windows has started to load if that's at the logon screen, but it sounds like you're having problems at the logon screen. |
If a user with administrator rights is also on the screen but you can't move your mouse cursor to it, you can toggle which thing on the screen is selected by pressing the Tab key, and use the cursor keys to select a user - press Enter to logon to that user, after typing a password if you need to.
You can have that problem
- if your mouse or touchpad is defective, or is not pluggeed in properly, or it's cord is damaged
- or when you have connected a corded USB mouse when you were only using a PS/2 mouse previously, or the first time you connect a wireless mouse's USB adapter. Once the desktop screen has fully loaded the necessary generic drivers needed for the mouse to work will be loaded automaically, unless the wireless mouse is an old model in which case you may need to do something to activate it, or unless the wireless mouse has been switched off or it's batter(y)(ies) is (are) too weak.
The mouse will be able to move the mouse cursor at the logon screen after that.
For some wireless mice that can "go to sleep" to prolong the battery's useful life, moving the mouse doesn't activate it - you must press a button on the mouse to activate it (one of the ones you normally press in Windows).
If that's not what you're talking about you need to explain what your problem is a lot better and supply as many details as you can think of.