Hi CRUCIAL, 1 week Ago I bought the following memory through your store on amazon.com: Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin Memory - CT8G4SFD824A This memory, as crucial analysis tool said, is compatible with my laptop. When I tried to do the upgrade, totally black screen shows. No beeps, no possibility to enter BIOS, nothing, totally black screen. I switch again to the old DDR4 $GB RAM and boot starts normally. I read lot of forums, I have upgrade BIOS to the last version 301, and nothing. Black screen every time that I set the new curcial memory. Thinking that maybe the new DDR4 was corrupt, I talked to amazon and they replaced it to a new one. Yesterday has arrived the replacement, but again the same problem. Screen totally black. Using CPU-Z to know about my laptop SPECS says that originally 4GB RAM that cames with laptop is SINGLE RANK. The one that I have bought from crucial is DUAL RANK, as the crucial analysis says that DUAL RANK is compatible with my laptop anyway. I need your help please. Regards. Santiago.
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