Quote Originally Posted by stevemc181 View Post
Is the extra ram you added compatible? How many ram slots does the computer have, if it's 4 slots have you tried the ram in slots 1 and 3? I usually find its best to stick wih the ram in matched pairs. Yes it can work if they aren't identical but it can also cause issues. Computers shouldn't come with less than 8gb these days, 4gb is barely cutting it. Do you know what the motherboards max ram capacity is? You might be better just upgrading to a single 8gb stick.
He's on the the path... Kind of. The ram being compatible is crucial with ddr4 ram but less with DDR3. With DDR3 the ram will just reduce the clock speed of the fastest ram to match the slower ram. It's much more likely this is software or (as you stated) motherboard related.

Also, his laptop is most likely to have only two slots, I'm yet to see a laptop with more than two slots in 10 years of operating them

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