Unplug the system from the wall and remove the CR2032 battery from the board. After one hour, replace the battery, move the BIOS Configuration jumper to the 2-3 position, plug the system into the wall and press the power button. This will hopefully allow you to get into BIOS Setup...
Unfortunately, it didn't help. I can see backlight changes but no characters on the screen. Does this mean that my MB is dead?
Did you try with the BIOS recovery? Unplug the hard drives.
Recovery with CD-ROM
Intel® Desktop Board DP35DP
I've already tried all of this recovery modes. Now my MB doesn't even start properly - it permanently reboots...
Is there any ways to manually programm CMOS chip? I have some device to do that...
No, there are not. First of all, CMOS is not used for either BIOS or configuration storage (give or take the odd place where the BIOS still clings to CMOS (the result of BIOS bugs, IMHO), witnessed by the fact that removing the CMOS battery can make a difference). The BIOS, Onboard Video OpROM and ME Firmware, as well as the BIOS configuration, are all stored in a flash IC. Secondly, the flash can only be updated using the normal and recovery BIOS update processes; it is secured against all other methods.
I can only suggest that you retry the recovery process. In the absence of any output, wait at least a half hour (killing power after 10 minutes may have been the thing that corrupted your flash).
Sorry I couldn't be more helpful...