Have you been delving inside the box recently? You could have losened the video card or you could check the video drivers and update from the makers site. Check alos the cable connections on the back to the monitor.
The Evil Within 2 review-in-progress
Photoshop CC 2018 released with new Curvature Pen and better brush tools
Camera tips to take better iPhone photos
Les meilleures applications de covoiturage 2017