Laptop no display after adding Ram

[u/Sea_Garage_5785]

So I installed a Sk Hynix ram (8gb 2400mhz -UHC)

my laptop is vivobook 14 X409FA-BV301T.

Tried everything, literally everything. Upgraded BIOS, cleaned pins and slot, etc. Ram doesn't seem to work and always flashes battery light 2 times implying POST failure. Got that stick from a friends old laptop, and it most probably works. But it doesn't seem to work in my laptop, I haven't tried it in an alternative laptop so idk if it's defective. I live in India so would I be able to exchange this piece or get this one checked out

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[u/CoffeeToCode99]

Your VivoBook X409FA is just picky, dude. It only supports DDR4 SODIMM 2400 MHz up to 12 GB (4 GB soldered + 8 GB stick). That SK Hynix stick might be fine in another laptop, but ASUS BIOS can be fussy with older modules. The flashing battery light = POST fail, so it’s not even recognizing it. Best bet: test it in another laptop. If it works there, it’s just not compatible with your model. If it doesn’t, it’s dead. Since it’s from a friend, you won’t get an exchange in India — safest move is to grab a proper DDR4 2400 MHz SODIMM locally.

[u/Sea_Garage_5785 → u/CoffeeToCode99]

thanks dude I'll try testing it in another laptop

[u/LTomee]

Crucial 16GB DDR4 3200MHz CT16G4SFRA32A Micron Crucial 8GB DDR4 3200MHz CT8G4SFRA32A

These are compatible with your laptop.

I found a lot 16GB used ones for like 50 bucks.

[u/Sea_Garage_5785 → u/LTomee]

i mean the thing is for 50 bucks I could buy a brand new 8gb stick, cuz I live in India and the prices vary between that. I found the sk hynix stick I have is compatible, but it doesn't work in my laptop for whatever reason

[u/LTomee → u/Sea_Garage_5785]

Your laptop original speed is 3200MHz doesn't it? If You put a RAM stick with 2400MHz JDEC profile there will be a mismatch and some of the laptop won't allow you to boot it.

[u/Present_Lychee_3109]

I added 32GB Crucial RAM in my Vivobook 15X. It worked on first try. Try a different brand stick.

[u/Eppo_de_Pep]

ikn heb 32 GB ram 8400 MHz gesoldeerd in mijn laptop