13.1 won't power off

Laptop is a Dell M5010 (acquired approx early 2009), AMD Athlon II P320 X2 @ 2.1 GHz, 3 GB mem. Came from Dell with Win7, I installed openSuse in multiboot. Problem: 13.1 will not shut the machine down. Choosing ‘power off’ goes thru its scripts, and ends with:

reboot: System Halted

and the power button must be used to power off. Funny thing, the 13.1 live cd on the same laptop does correctly shut down. Embarrassingly, so does Win7.

Thanks in advance for your help …