processor won't go faster than .79Ghz

I have a Pavilion 23 g010 all-in-one. It has an AMD E2-3800 APU quad core with a 1.3Ghz max speed.  The processor runs at .78Ghz and sometimes bumps up to .79Ghz, but never higher. Programs are slow to respond and so are web pages. I've adjusted the processor min state between 50% to 100% and it doesn't change anything. Thank you.