I've checked memory compatibility (Crucial System Scanner) for my laptop Dell G7 7588, then I bought the recommend memory modules from Amazon (Ballistix Sport LT 16GB Kit 2 x 8GB DDR4-2666 SODIMM - BLS8G4S26BFSD). The laptop came originally with 2 x 4GB (SK Hynix 4GB 1Rx16 PC-4-26666V). I've verified that DELL G7 is not full compatible with these Ballistix modules I bought: it doesn't recognize when I use 2 x 8Gb Ballistix, it's just able to recognize 1x8Gb Ballistix in Slot 1 + 1x4Gb Hynix in slot 2. I've already updated my G7 BIOS to version 1.2.1 (May-22-2018) but it still doesn't recognize 2 x 8Gb Ballistix. Other people are having the same problem. See: https://www.reddit.com/r/Dell/comments/8m51hu/memory_upgrade_for_g7_7588/ but still with no solution. Need help.
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