Most computers have a similar prompt when starting up, "press del to run setup". At this time, press the del key to enter cmos, then find "advanced BIOS features" and change "first boot device" in boot device. "Set the CDrom or DVD in "as the first boot position, press F10 to save and exit, insert the downloaded or purchased CDLINUX disc, and restart, there will be a cdlinux selection menu.

If your motherboard is relatively new, you should first put the CD in. Before the Windows startup screen appears, press F8. Most computers will have a choice to boot from the hard disk (HDD) or optical disk (CDrom or DVD). menu, select boot from CD. Of course, this method is simpler, but it requires motherboard support.