Dell Optiplex 760 enters power save mode in ubuntu boot

[elec sjsu]

In this Dell Optiplex 760 PC I installed Ubuntu 11.04 in a separate
partition. Duel boot allows to choose either Windows 7 or Ubuntu.

Problem is that upon choosing Ubuntu the message displayed is "Entering
Power Saving Mode".

How to stop it going into "Entering Power Saving Mode" and make Ubuntu
working?

Thanks,
Elec, San Jose
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