Boot with the "noathlon" option. At the boot prompt type:
Read the release notes on CD 1'
From the release notes:
- Red Hat Linux will install a kernel optimized for Athlon processors on systems with an Athlon-class CPU. Due to the optimization, this will put a greater load on the system components. Therefore, a very small number of machines may fail to boot as a result of the hardware not strictly conforming with AMD's specifications and thus being unable to cope with the load. On such systems, you can either upgrade the hardware (under-powered power supply units can cause this) or use the rescue capability of the installer to install an i686 kernel.
- Some Athlon-class machines are out-of-spec or have overly aggressive chipset configurations set by their BIOS. On these systems, you may see random "Oops" messages at boot time (after successfully completing the install process) and will be unable to boot successfully. On these systems, boot with the "noathlon" option to turn off the athlon optimizations; install the 686 kernel instead of the athlon kernel to avoid this for the future.