yes all of the ram is bad… its all no good.…  you can screw around and replace one or 2… only 6 months later to have another one or two go bad...

that ram is is the worst.  the apple logo'd micron is bad… and yes, that board has already had some ram replaced, but with the same junk that goes bad.

i go through and replace all the ram with good Samsung ram.. and problem wold be permanently solved.

as i said its a big nasty job,  i have recently lowered my price for this job.. and its a big nasty job.. but has to be done… there really is no other viable solution.