Why is Dolphin running slower now?

[giatran]

When I first got my laptop, I could run Dolphin pretty well. SSBB ran at 80-100% emu speed during 2 player multiplayer and the opening. My laptop was taken away few months ago and now SSBB runs at 30% speed. I tried resetting my laptop to see if it would help but it didn't. I'm just wondering if there is a way to restore my laptop to regular speed now (overclocking, i dunno no very good with hardware stuff...).