I need help

ok so ever since i installed windows 7 ive had a few problems
most of them ive worked out
i did a clean install of windows 7 professional from vista home premium
as most of you know i wasnt able to just upgrade

but i notice that my battery life is terrible...worse than when i had vista
after only about an hour on power save mode i am down to about 40-45% battery
i cant put my computer into sleep mode or adjust the display brightness
one of my friends also installed 7 and he doesnt have these problems

if anyone has any suggestions please let me know

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