Why does my cam say its "in use or not plugged in" when i burn,decrypt, or scan my dvds for errors.?

Question

These 3 processes take up some cpu usage, But this never happend untill I installed a 2nd burner. I recently took the 2nd burner out and I still have the trouble with my cam. Sometimes my keyboard has trouble with the return key. any ideas?

Answer 1

If they are all USB devices they are probably sharing bandwidth and the cam doesn't get enough bandwidth to work while the dvd drive is doing stuff.
With the keyboard, it's either worn out or broken, my one laptop's "A" key does that and my one keyboard has a bad "C" key.