I have a Geforce fx 5200 (currently set up for dual monitor), I figured this was the problem but I am not sure what to do.

Also, I have an LCD screen which may be the problem as well.
If you can, plug two monitors or LCD screens into the dual ports. Then turn both on & boot up Knoppix. It is possible that it is using 1 or the other video ports. In fact I have seen Windows XP do it too -> turn on monitor. Then turn on PC. Gets to BIOS then loading Windows XP. Then looks like it dies but Windows XP is really running on the other port with the other monitor.