a c 172 à CPUs
a c 197 K Overclocking
good on ya for giving it a go but all that cpu is good for is an experimental suicide run overclock (if you do let us all know how far it can be pushed before u get a nice little puff of smoke) because no matter what u do its still gonna be slow and only good for the bare basics if ya can afford too give it to a relative/use it as file server/media center and get something new, stuff is dirt cheap these days. the worst/cheapest/nastiest cpu on the market today will still run rings around it no matter what u do.
you could try resetting the bios with the jumper or pull the battery for a min if you dont know what that is, that will prob get ur board up and running again, if its a cheap board or an oem it will have limited or no overclocking so seriously i wouldnt really waste your time there is no favorable outcome that u will get out of it no matter what you do its still gonna be an 11 year old chip that maybe able to keep up with an old atom cpu out of a netbook if your really lucky, if its a socket 775 and ur desperate for a cheap build go buy an pentium 2160 1.8 will clock up to 3ghz or a e5200 2.5 will go up to 4ghz, i have owned both an these are the overclocks i got thats a good place to start to learn overclocking u should be able to get them on ebay for next to nothing
ur desktop compu has a battery for the bios otherwise every time u switched the power off at the wall ur bios would lose all its settings, have a look it would of been right next to the bios reset jumper, which makes me think you didnt reset bios with jumper. if your computer boots and has kept the same config as before while was overclocked u didnt reset ur bios correctly
sounds like you really have no idea what your doing, you haven't left any useful information about your board for anyone to find a bios other than a chipset and even then u haven't really even left that. you would need the motherboard brand,model, etc sounds like you just pulled up system info from windows instead of looked inside that box under your desk. your a whole new level of noob, btw if your compu is a branded oem model eg compaq, dell, hp, ibm, etc forget about overclocking you wont get anywhere