This is for a different mobo, but I would imagine your Cmos jumper is right around the battery.
See the big, round silver battery ?
See the little thing above it, tall, thin and beige ?
That object is the Cmos jumper and it needs to moved as the below pictures show.
[||] | - It current will look a bit like this
You need to make it look like this...
| [||] - The lines are prongs from the mobo, and the brackets are the jumper.
Also, this is just hypothetical since I don't know what mobo you are using. If you have a digital camera, take a few picture of the mobo and somebody will ID it.