Downloaded Knoppix first from a mirror site and burned at max speed. I restarted my computer to boot the CD but Knoppix froze three lines down at "Looking for CD in: /dev/hdc _". I came here and saw that this might happen for several reason...

So I downloaded Knoppix again as a torrent this time, checked the hash, and burned at 4x instead of maximum and recieved the same results when i tried to reboot. I tried to load Knoppix on another labtop (newer model) and a desktop (older model) because I read that sometimes that it would load on another computer. On the second laptop Knoppix loaded perfectly but on the desktop I got an I/O error message and was being bumped into a limited shell.

I then reburned the CD at 10x, minimum speed possible, on the second labtop using a different program, Nero, to burn the ISO image. This CD has had the same success rate as the others. I haven't tried any cheatcodes yet and wouldn't know which ones to try to help troubleshoot. The computer I want Knoppix to work on is my HP pavilion zv5000 and I've seen other posts where this model worked with Knoppix.

Specs.

HP pavilion zv5000
Microsoft Windows XP SP 2
Celeron CPU 2.8GHz
1.87 GB of RAM

HP pavilion zd8000
Microsoft Windows XP SP 2
Pentium 4 CPU 2.8 GHz
512 MB of RAM

HP pavilion a265c
Microsoft Windows XP SP 2
Pentium 4 CPU
1.5 GB RAM

If any other information is needed to help access the situation just leave a post telling what you need. Any suggestions on how to fix this problem will be greatly appreciated.

-Edit-
Just tried the failsafe cheatcode and loaded Knoppix successfully. Seems to be a hardware problem i guess but don't know where. Any clues on where I should start the search? Also on shutdown, knoppix didn't finish shutdown after ejection of the cd and my pressing enter or after two minutes has passed.

knoppix no{apic,agp,apm,audio,ddc} Skip parts of HW-detection (1)
knoppix no{dhcp,fstab,firewire} Skip parts of HW-detection (2)
knoppix no{pcmcia,scsi,swap,usb} Skip parts of HW-detection (3)

Tried these cheats separatly and all at the same time but didn't work.
-Edit-