What does this thing have?
Colorful stripes.
LGBT tilt.
Probably a defective graphics chip or a defective display cable.
Simply plug in an external monitor, walk the bug with it's the graphics chip, the bug does not migrate with it's probably the display cable.
If the fault occurs intermittently and changes when the display is moved to a different position, it is the flexible cable to the display.
Bug fix by a friend about 15 euro, by a workshop 75 to 100 euro.
do you have a friend who is "fit"? That's not a big act, I've done a dozen times.