I have a EuroPro 9101 computerized sewing machine that appears to be locked. The machine has power but hand wheel will not turn, nor does the thread lever move. Can you advise how to fix this problem?

SOURCE: unable to adjust tension,

Sounds like the bobbin thread is not inside the tension on the bobbin case. This normally happens when the bobbin is upside down. Insert the bobbin and pull on the thread.The bobbin should turn counter clockwise.
sewman7

SOURCE: My brother PE-400 sewing quit sewing

The "race" on your machine needs adjusting. Remove the bobbin cover, bobbin, & case. What you have left is the race, it moves when you turn the large wheel on the top right of machine. The needle also moves up and down. There is a hook on the race that catches the needle thread. Try moving the race to the line up with the needle. It may take a couple of trys but it should do the trick. Also clean any threads that may be caught on or arround the race. Hope this helps!

SOURCE: my thread take up lever looks like it is bent

Sounds like a bunch of thread caught up in the take up lever ,check that first open the side cover and look

SOURCE: can't tighten clutch on Kenmore zig zag sewing machine.

The clutch has fallen off the shaft. Remove the very small screw in the clutch release screw to remove the clutch release. Place the clutch(round thing with ears on it) back on the shaft with the center ears pointing towards the outside. Put the clutch release screw back on. Tighten it to make sure it works
properly. Put the small screw back in the clutch release screw and test it again. If it will not tighten or release properly, remove the clutch ,rotate it180 degrees and try it again.This should solve your problem.
sewman7

SOURCE: Can't fix tension on Euro Pro-Model 9101 sewing

Adjust the bobbin tension.