keyboard - monitor error

this seems a bit odd. I just upgraded from 2.4 to 2.6...working my way up to the 3's but in 2.6 it seems as though when i boot up the ipc with an external keyboard plugged in, the console seems like it boots up, but the monitors don't show anything. and stayed black for several hours. I then shutdown and unplugged the keybooard, and boot up, and the monitors work fine.

Any Ideas? the keyboard and monitors were working fine together before the upgrade.
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