You need to install the graphics drivers by the look of it, i would have thought the recovery cd would have put all the drivers on for you, but the lack of sound and monitor properties might mean it hasnt, have you any other cd`s for the machine ?
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?