I have motherboard model X8SIL, but system can't boot the operating system when there are more than 12 bootable devices, no matter if they are HDD, CD, or USB drive; what is the issue here?
Please update the BIOS to the latest version by accessing the product page and selecting "Update Your BIOS" under the "Links and Resources" section. Refer to the motherboard manual for instructions on updating the BIOS.