If you’ve updated the BIOS and the computer won’t post/boot try to reset the BIOS.
Here is how to reset the BIOS on the XH61V:
1.) Unplug the power cord
2.) Remove the lithium battery from the MB
3.) Hold in the power button for 30 seconds
Then put everything back together and boot up the computer, the new BIOS update will remain after the reset.
If your computer still doesn’t post after the reset, you can RMA the BIOS chip for a replacement with the newest BIOS. To do this, you can go direct to Shuttle Tech Support or I would be glad to help out with the replacement.