Restart hangs forever - Have to manually restart / turn off.

Windows XP pro has started having two problems suddenly.

One is that when trying to shut down or restart it will being shutting down - but then right before it should turn off it hangs on an image of the desktop -empty with just the mouse. I have to manually push the restart button.

Two is that when pushing CTRL+ALT+DEL, it used to pop up Windows task manager right away but now it goes to the log off screen that gives me options. I want it to go back to the way it used to be.

This all happend at the same time as when my user account stopped logging me in instantly. But i fixed that with User controls2 command. So i dont know what it is - but some thing changed my computer and started these 3 problems.