Here you will find the memory specifications for the D845GVSR and a list of tested memory.
Try to use this kind of ram otherwise it won't work:
If you got beeps without ram, the desktop board and the processor are still operative.
Additionally here is the technical product specification (TPS):
If your ram is under specifications then you may try by removing the CMOS battery of this desktop board for 15 minutes and try again.
Remember to test each memory slot individually as well.