I have a Desktop Boards DP55WB and I'm having this problem after upgrading the Bios WB0312P.ISO v0312.
The beep sound at the start of POST has been removed as of 0312. You should not hear any beeps at POST unless you have an error.
This is what I have stated in another thread http://communities.intel.com/message/111134#111134 which has the same problem as yours. " First I'd like to confirm your observation about the beep after the update. Indeed its gone. Also I notice that pressing F10 will present the bios not the boot menu. I did not investigate this further.
Another observation that I'd like to add after the update is that the options in the bios seems to be animated (if selected and not yet pressing the enter key). It only dissappears after several reboots and setting the bios configuration to defaults. Another one is when reverting back to a lower version causes the screen to remain blank with the cursor blinking at upper left of the screen and not booting to the OS and not even to the bios either if you press F2. This is reported earlier in other threads. I am successful to revert back to 0310 after some unusual procedure. With 0310 everything is back to normal."