xmp mode

I have just ordered my first built after years of torture by IGPU's , my budged was low so i bought an i5 9400f a used gtx 970 x2 8 gigs of ram 3000MHz the whole built costed me 900 bucks yes sadly in my country everything expessive , but i forgot that i needed a mobo that supports that ram...

i needed to reinstall windows OS so i copied all my files (pictures, documents, music) to an external drive. everything was there and the external drive was working fine. i disconnected the external drive and did a factory restore. when i connected the external drive to copy files a window...