Hi, Yes, I have tried with a new power supply but unsuccessful. I tried removing everything except the agp video card and system memories, and the problem still persists. Basically, my monitor says, "power saving mode." I looked at the computer power and hard drive lights and they are both on. The only thing that makes the computer boot is when I put in a brand new hard drive. Only then, I can get into the BIOS setting and boot the computer as well. However, this is only a temporary relief. As soon as the computer is either restarted or shutdown and powered on, I get the same message "power saving mode" and the computer will not boot nor can I access the BIOS. I searched about this board and its power saving mode, and it appears that several people have already experienced this and ended up exchanging their boards. Obviously, my board is already out of its warranty, but since it is almost in a brand new condition, I am just curious if anyone has fixed this issue. Thanks.