I just wanted to "quickly" upgrade the RAM of my X9515 to 8GB. Therefor I got 2 G.Skill SoDimms 4GB (PC3-10666) CL9-9-9-24 and put them in.
Iff both modules are in, the laptop does not boot (does not even turn the display lights on). With just one of this modules it runs fine but of course only with 4GB...
BIOS update did not solve it.
What could be the problem?