Hello Omega1, I am afraid to say that this motherboard has been out of support and I think it is not longer under warranty. http://www.intel.com/p/en_US/support/highlights/dsktpboards/d510mo
However, these are some recommendations you can try:
- Take the system outside of the chassis. Make sure you disconnect all other components from the motherboard and take the product out in a non-conducted surface.
- Clear the CMOS. The correct way is, while having all components disconnected from the motherboard, disconnect the BIOS jumper and remove the battery for about 15-20 minutes. http://www.intel.com/support/motherboards/desktop/sb/CS-028780.htm?wapkw=clear+cmos+battery#datetime
- Test the motherboard without memory, you should get 3 beeps.
- Insert 1 memory stick and restart the system.
If the board is still having the same behavior after this troubleshooting we can say that it is defective.