There are last two issues: 1) it is unlikely to happen, but I did solve a few problems that old case doesn't like new mobo. If the computer case has ground problem or somewhere on mobo touched metal case, you may see booting problem. Also don't forget to test the power supply. 2) Contact the dealer to get a mobo replacement if all failed to work. Jun Qian David Williams wrote: > I have tried all of your suggestions, and still no > display/no boot. Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://nospin.com/pc/pcbuild.html