What is wrong with the Bose system hooked up to my desktop?

SOURCE: Bose Companion II Computer Speaker: The AC power adapter burnt

My puppy chewed through the cord for my a/c adapter, I just took the speakers into Circuit City, and they found me a workable replacement (the replacement isn't BOSE, but it works just fine).  Hope that helps!

SOURCE: Does the Bose companion 3 have an internal fuse?

Yes. The companion 3 system can be repaired for $75. Call Bose at 800-367-4008. They will also give you a new 1 year warranty.

SOURCE: Bose Companion 3 Series II not working (Mac)

The speakers seem to be muted by default - you'll see that the LED is yellow/amber. Tap the control pod - the LED will turn green and speakers will work. I felt like such an idiot after I spent almost an hour trying to figure this out. (This feature should be more prominent in the manual.)

SOURCE: Loud hum when Bose Companion 3 Series II speakers are turned on.

I had the same problem for many months. I asked a sound & video professional and he suggested I move the subwoofer away from any power source. I had the subwoofer next to my UPS. Once separated and moved all wiring away from the power supply (about 12") the low bass hum was practically gone.

SOURCE: Control Pod for Bose Companion 5 speaker system

I had the same problem right out of the gate, the volume dial on my control pod for my Companion 5 wasn't working, however, the touch pad and LED worked. I called Bose customer service and was instructed to:

First, unplug the power directly at the back of the woofer while the unit was on;

Next, I was instructed to unplug the control pod, visually inspect for any damage/defect;

Finally, re-seat the control pod on the back of the woofer and then lastly plug the power cable back into the woofer.

It worked like a charm. I hope this is helpful!