Make sure it was the CLR CMOS jumper you moved, and not the jumper which applies standby voltage to the USB ports (JUSBV2). Also make sure the CMOS jumper isn't in the RESET position (pins 2 and 3) when trying to POST, as the jumper needs to be on pins 1 and 2 for normal operation. The CMOS jumper (JCMOS1) is just above the SATA1 ports, at the RH edge of the board.