Did you unplug the power supply, change jumper, wait 10 seconds, return jumper, plug PSU back in? No need to pull the battery if you unplugged the PSU.
He was using Mobo prior with flashed BIOS according to his first post.
I'm assuming your board has OB Video capabilities?
Mine just beeps at me until I put the Vid card back in :D
As stated clear CMOS.
Remove any unnecessary equipment such as storage drives, optical drive etc.
Use 1 RAM stick in first slot if using more than 1 stick at the moment. If still no post, try the 1 stick in each slot. If still no post, try another stick of RAM. (I had this problem recently...