I had some initial difficulty booting from a Knoppix 4.0.2 CD and noticed that a number of other HP Pavillion users had similar problems. Here is what worked for me...
1. Held F9 during boot to set boot order to boot from CD-ROM drive first.
2. Inserted Knoppix CD into CD-ROM reader and continued to boot from CD.
3. Got to Knoppix home screen with 'boot:' prompt at bottom.
4. Hit return to continue with Knoppix boot but screen just went blank with no further CD-ROM or hard drive activity. Checked forums and decided I had problems with display of error message.
5. Shut down and started again by repeating steps 1 to 3 but this time I entered 'knoppix vga=0' after boot prompt and hit return. The Knoppix install continued and this time I saw the following error message:
'Kernel panic - not syncing: IO-APIC + timer doesn't work! [....] try booting with the 'noapic' option'
6. Shut down and repeated steps 1 to 3 again but this time I entered 'knoppix noapic' after boot prompt and hit return.
At this point Knoppix installed properly and all was well. Hope this helps others out there with similar problems.
Cisco UCSB-B200-M4 Blade Server 2 x E5-2650 V4 NO RAM NO HDD/SSD
$199.99
Dell PowerEdge C6320 82F9M Server Blade Module 10gb SFP+ 082F9M
$79.99
Dell PowerEdge FX2s CTO Blade 4 Slot 2U Chassis 2x 2000W
$399.00
HP ProLiant BL460c Gen9 Blade 2x E5-2690v4 2.6GHz =28 Cores 32GB P246 650FLB
$223.00
Dell PowerEdge M620 Blade Server 2 x Xeon e5 2665 8 x 16 GB(128) RAM - No HD
$44.99
Dell PowerEdge M610 Blade Server E5620@2.2GHZ (6x)8GB RAM (2x)146GB 15K SAS HDD
$79.00
Dell PowerEdge M520 Blade Server Xeon E5-2403 NO HDD NO RAM
$40.00
Dell PowerEdge M620 Blade Server 2x 10C E5-2690v2 64GB Ram 2x 600GB 10k HDD
$125.00
HP ProLiant BL460c Gen9 Blade 2x E5-2690v3 2.6GHz =24 Cores 128GB P246 650FLB
$265.00
HP ProLiant BL460c Gen9 Blade 2x E5-2697v3 2.6GHz =28 Cores 32GB P246 650FLB
$173.00