Usually indicates a memory seating issue. Remove the RAM, clean the gold contacts with isopropyl alcohol, and re-seat them firmly.
A comprehensive archive for motherboard specs, BIOS files, and related manuals for the RC410 series. rc415t-am motherboard manual
The manual stresses "dual-channel" mode: Install identical size, speed, and brand sticks in DIMM1 (blue slot) and DIMM2 (black slot). If using one stick, always use DIMM1. means only 3.2GB is usable in 32-bit Windows. Usually indicates a memory seating issue