I have a lenovo y40 and i tried to install ram (yes i know how to do it) and it didn't show up. The computer is new and can be upgraded. But for some reason it doesn't show up no matter what i add to it.
How to add ram to my laptop?
Neydah
Can the motherboaed take that much, cab the slots take the size you fitted abd is it compatible ram?
Fred
Well, there are two main models of the y40, the y40-7 and the y40-8
The 40-7 can take up to two 8GB sticks of DDR3 PC3-12800 1.35V ram (DDR3-1600)
The 40-8 model seems to be the same ram - DDR3 PC3-12800 1.35V
They may be able to take faster ram, like DDR3-1866 as well, but all the listed ones seem to be 1.35V versions.
Mixing speeds or different vendors may introduce some timing issues. Always use matched sets if possible, or at least the same vendor…
Adrian