bought new RAM installed it after pulling the power and earthing myself turn on and the DRAM LED stuck on, thought yeah cool just MemOk, didnt work. Went to tput my old RAM back in and RAM light comes back on.
1st RAM Kingston Hyperx 1600
2nd Patriot 1866
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Try firstly clearing the CMOS (unplug the power cord and remove the CMOS battery for few minutes) then installing only one RAM stick (from the old kit).