All of a sudden I've been getting some artifcacts on my Surface 3 display. This occurs during post when the Surface 3 name appears on a black background. The artifacts start out as what appear to be a series of long equal signs across the entire screen above the Surface 3 words. Just before the system goes to the login screen, the equal signs become some wide colored bands just for an instant. Have had my Surface for 2 years and this just started occurring a few weeks ago. Is this the first signs of a screen failure? Anybody else experience this? Anyone know what it might be?