From Fedora Project Wiki

Problems

Hang when booting Fedora 12 or 13

The computer might hang when booting Fedora 12 or 13 (kernel 2.6.31, 2.6.32). The issue might be resolved by updating to the latest BIOS. (It's simple to do using EZ Flash 2 and does not require Windows or DOS, just a USB memory.)

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