Have to lOGOFF / LOGON at startup to use computer

[bud]

 
Hi...please help..

Everytime I switch on the PC...it boots up and shows the desktop and icons OK.
However....although the mouse works and moves about...I cannot "grab" any icon on the desktop to begin using the computer.
By accident, I found out the only way to use the PC is to ....
Cont./Alt./Delete
On the "users" tab select the only user available (which is named ALL)
Click "logoff"
When the "ALL" user icon shows on the desktop...selct it with the mouse....

Then, the pc logs on to this account and we are away.
Why have I to go thro' this rigmorole every time we start up the PC??


Again...please help !!!