I am assuming you took Dell (factory) memory module out of the slot and install the Kingston memory to see if it's will work along and without any problems? Check Memory supported configurations for your computer in link below:

Dell G15 5511 Setup and Specifications | Dell US

I find it best to use two identical memory sticks that are from the same manufacture - see link below):

Parts & Upgrades for your G5 15 (5511) | Dell USA

Hi LSUFAN51,

The kingston fury meets all the specs listed and I tried it on its own and with the factory stick, the kingston works fine in my husbands ASUS laptop so it's just that my Dell doesn't like Kingston fury. I couldn't find any list of approved/known good Ram manufactures which is what I'm hoping to create.

You won't find such a list.  Work in the other direction - buy from a supplier that certifies compatibility (Crucial does, as does Kingston when memory chosen for their configurator is used).

Hi. I have the same situation with the Kingston Fury KF432S20IB1K2/32 (with the latest BIOS 1.8.1 on the laptop)

I guess I have to try to return this RAM to the shop now

Also I've found some information about compatible Kingston RAM with G15 5511

Thanks M_A_X_NSK,

I'll check it out. this rather frustrating, some clear documentation on what is required for compatibility would be very helpful. (Hint hint any Dell people reading this)

I've been looking into ram upgrades for a 5511 myself.  I've run across others who have had issues upgrading using certain Crucial and Kingston ram.  The issue is the lack of XMP support on the motherboard. So any rams with voltage over 1.2v and/or latency lower than CL22 aren't going to work. You'll notice the link with the specs above don't specify voltage or latency. Also, when you look at the ram Dell sells for the 5511, they are all 1.2v and CL22.  Looks like the ram you tried to use is CL20.    

jbraft thanks a lot!

I've also found page of crucial ram compatibility and ordered CT2K16G4SFRA32A module set. Must be in the shop tomorrow. I'll let you know is it works

Update: CT2K16G4SFRA32A module set (2x16GB) works fine

Aethelflaed

I would suggest you quickly return memory module to the retailer before it's too late to return it and get your money back. Now, you can contact Dell-Cares by following steps in link below, hopefully they can help. Good luck.

How to send DELL-Cares a Private Message - Dell Community

M_A_X_NSK

Thank you for sharing an update on the Crucial memory.