Power problem; Nonstop fan

Here is what you do, it is for unfreezing the bios. Open your computer and look for the bios clock battery it will be silver and the exact roundness as a nickle. you will be able to remove it rather easily the number should be CR2025 on the battery. you can buy these from most stores actually, radio shack, walgreen's. walmart, ect. before you leave for the store unplug your computer and hold the power button for 15 seconds, " this clears the power " leave it unplugged until you have a new battery, Once you have a new battery install it with the + facing in the open and the unlabeled side facing down into the slot. plug your computer back in and boot, it may cycle through the Bios restart once, from there it will restart again and you should be good to go.