Elitebook 8770w - New RAM doesn't work

[43615]

I've installed my new RAM today, 2x16 GB DDR3-1600. However, the laptop doesn't start with the new modules installed. The display stays off and the lock key lights blink 3 times (memory error). With the old single 8 GB stick, it works absolutely fine.

Is there some kind of limitation I missed?

[Huffer · Accepted solution]

Yes the largest single module you can use is 8 gigs. Dual core models have 2 slots so overall maximum is 16 gigs. Quad Core models have 4 memory slots and can run up to 32 gigs total but it has to be 4 x 8 not 2 x 16. 

Service Manual

Post back with any more questions but please accept as solution if this is the info you needed. 

[43615]

Well dammit, that's two months of waiting for delivery out the window!

I actually have a quad-core CPU but only 2 slots. (not the original CPU).

Anyways, thanks for clearing this up!