We have a few new different model Lenovo laptops running XP pro SP3.

All have been working fine besides the tablet one.

When Logining into the network the login box disappears but leaves the mouse curser and virtual keyboard, they are not frozen as you can move them around. It just stays that way. Alt-ctrl-del does not work, the only thing that can be down is to power it off.

It will login correctly in workstation only. It also works fine with SP4.

I have tried a fresh install of SP5 and a upgrade from SP4 to SP5, it does not help.