heamer

Hello I have a HP Touchsmart iq500 series. When I push the power button, it turns on and instantly goes to the HP welcome screen. After then...Nothing. I can't even get into the bios. No matter how many times I press F8 or F11 and all those other commands, it doesn't load. It completely freezes, power button. Restoring is not an option because all my valuable files are on there. I have tried resetting the cmos battery too. Nothing seems to be working. Is there any possible way to fix this. I don't want to send it in cause they might change hard drives and thus eliminate my files. Plus I heard they are no help anyway. Please help me fix it, I know you guys can help