Posted 01 April 2012 - 10:53 AM
Yeah, I saw it happen with the Ubuntu Linux Netbook version a couple of years ago. For that it was something to do with the drivers for the power management (make the battery last longer) which was fixed simply by changing a value in a config file.
If you can't fix it in the battery management settings of your BIOS, take a look at the power management settings in Windows 7.
Click the Windows orb in the lower left corner (used to be the START button in XP)
in the Search Programs and Files textbox type
and you should see the Change Power-Saving Settings link
There might be something in there that helps.
I am curious. If you do go into the BIOS can you try Fn+F6/F7 and let me know if it works in the BIOS?