Where did you get the CD? If it's one you've created yourself have you followed the instructions in our documentation to the letter?
My computer has crashed recently and I need to recover some data from it. I am using Knoppix live CD to boot my computer. I have already entered the command in the BIOS menu to boot from CD, but nothing happens and windows tries to boot up. Just trying to figure out what am I doing wrong and how have others done it?
Please help..
Where did you get the CD? If it's one you've created yourself have you followed the instructions in our documentation to the letter?
A next natural step would be to try booting from either the Network or from a USB flash drive. That will help isolate whether the problem really is isolated to the CD drive or not.
Google 'netbootin' to get a handy utility for taking almost any LiveCD image and making a bootable USB stick out of it. I am running a Knoppix LiveCD on the USB stick right now, made using netbootin.
Of course, you will have to run this on another machine: you can either use an ISO image you have downloaded separately (as I did) or connect directly to certain distributions and download the latest from their repository.

OPNsense pfSense 8-Core Atom C3758 2.2GHz 8GB DDR4 64GB SSD 8x NIC QAT AES VPN
$145.00
OPNsense pfSense 16-Core Atom C3958 16GB ECC RAM 512GB SSD 8-Port QAT AES-NI VPN
$288.00
pfSense Firewall 16-Core Atom C3958 8GB DDR4 RAM 64GB SSD 8x 1Gbe QAT AES-NI VPN
$184.99
Fortinet FortiGate FG-40F Network Security Firewall NO RACK EARS
$49.99
OPNsense Firewall VPN QAT 8-Core Atom C3758 2.20GHz 16GB DDR4 128GB SSD 8xNIC
$175.00
Fortinet FortiGate 60F FG-60F UTM UTP License Until 2027 Network Security FW VPN
$229.99
Fortinet FortiGate 60F FG-60F P24286-03-13 Network Firewall Security Appliance
$155.75
Palo Alto PA-220 Next-Gen Firewall 520-000309-00J
$40.00
NETGEAR ProSafe 8-Port Gigabit VPN Firewall FVS318G NEW IN BOX
$69.99
Cisco Meraki MX67-HW Security Appliance Firewall NEW Unused Unclaimed
$202.50