I used the scanner and picked out a ram that they said was compatible. But when I inserted the ram and tried booting up. Nothing but a black screen. Then I replaced it with the old ram and it worked just fine. Laptop is Acer Aspire 3 A315-21-95KF max ram it can have is 12GB. 4GB that is not removable New ram is 8Gb DDR4-2400 1.2 V CL17 part number CT8G4SFD824A.C16FADP Original Ram is 2GB SOD DDR4-2400 CL 17 So not sure if the speed is wrong. Or wrong voltage or just a DOA stick.
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