I have set up a new laptop with a new of users. 

One of these attempted to access their account, and was asked to reset their password however this screen has got stuck. The password they enter is correct (we have tried it on a different machine) but we just get the screen 'The users password must be changed before signing in'

Can't get back to the start screen, can't try and login as a different user, and when I force a restart then the screen just comes back, and when I've left the battery to run down also the same screen comes back.

When I can sometimes get the screen to go away then the screen is just blue (no markings of any kind, plain blue), and if I click or move mouse the login screen comes back.

Any advice gratefully received

Hi,

Regarding current situation, lets try following steps to check the issue:

Step 1: Power the system off, remove the USB plugs for both the mouse and keyboard and move them to different USB ports. Power the machine back on and wait 2-3 minutes to make sure Windows has detected and set up the devices again.

If step 1 doesnt work, please try step 2:

Step 2: Basically windows 8.1 stopped all the USB ports from working. Go into BIOS, for USB configuration:

• Changed it to Intel XHCI mode: Disabled
• Legacy USB Support : Enabled.

Hope these could be helpful.