This post is to advise those who have this board and others like it running a RAID/RAID-boot configuration of any kind managed by ICH10R. A search of all community posts as of this date revealed no solutions and therefore I am now posting what I was able to do to resolve this issue. Situation was memory change/upgrade caused blinking cursor in upper left hand corner of black screen on reboot with apparent loss of RAID system and all associated files. Machine is a four 2TB Hitachi drive RAID 5/0 dual volume RAID array on a DG45ID system [latest BIOS version 131] with 16GB (4 x 4GB of Crucial Ballistix DDR2-800 4-4-4-12) system memory (only stable for this brand of memory if run at 2.0V and higher). Memory switch was being done for same amount of memory with lower native voltage of 1.8V and timings that match what is available in the BIOS (G.Skill DDR2-800 5-5-5-15). There were issues with the crucial memory (blinking screens, self-reboots, etc) that necessitated the change/upgrade. System BIOS was previously set to 2.0V memory voltage and on reboot, new memory emplaced which operated at 1.8V-1.9V must have caused (?) system reset giving cursor blinking on upper left of black screen. No amount of reboots and hitting F2 or F10 keys would allow for entry into BIOS to reset voltage. CMOS jumper, therefore, had to be reset after turning off unit, disconnecting plug, setting jumper from 'Normal' at 1-2 jumper setting to 'Configure' at 2-3 jumper setting, restarting computer, which then allowed entry into BIOS to reset all necessary settings. Closer inspection showed that the CMOS reset during the memory upgrade reboot had changed the DG45ID BIOS back to default IDE bios setting for hard drives. Once this setting was changed back to the bios setting 'RAID' configuration and memory voltage reset correctly, BIOS settings were saved and then exited. System advises on a black screen to reboot computer once CMOS jumper is set back to 'Normal' at 1-2 jumper setting. After setting jumper, system reboot this time returned everything back to normal as if nothing had occurred.
Closer inspection showed that the CMOS reset during the memory upgrade reboot had changed the DG45ID BIOS back to default IDE bios setting for hard drives. Once this setting was changed back to the bios setting 'RAID' configuration and memory voltage reset correctly, BIOS settings were saved and then exited.
The same happens with flashing the BIOS re the need to reselect RAID rather than native IDE - no big surprise really as RAID isn't a default setting.