Is your heat sink installed correctly. ie is it on the right way round?
Have you un-installed your graphics card and reinstalled it. ie un-install software then physically removed the card and start a fresh.
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 ?