Pc works Dram light solid red

[Rob_L]

As the title says my PC works fine and has done for a long time with this light on. I didn't think nothing of it till I looked closely and seen it said dram next to it. So I thought i'd come ask people with more knowledge on PC's about what I should do with it. I have memok on my board should I press this to rid myself of the light? If so how how/when should I press it Eg. sitting on the desktop screen? Will the memok break my pc if its already working?

Also my pc shows all 12gb working fine and the CPU and GPU work fine also.

This pc is 5-6 years old
specs if needed:
i7 950
12gb memory 1066mhz 2gb sticks
asus sabertooth x58
gtx 960 msi
1tb HDD

Thanks.