Notebook Video, Display and Touch

I have an HP Spectre x360 - 15-bl112dx Convertible purchased 12-2017, MFG date 9-2017, Windows 10. I updated BIOS 10/15/2018 per online suggestion. When multiple windows are opened - Outlook, Excel, Onenote or any other window - the top of each windows becomes semi translucent and shows vertical line ghosting of images behind each window. I have an external monitor and the same stacjed multiple windows are crisp and clear so I don't think its a software issue. I just noticed now that when the windows are near the bottom of the display the top color bar is darker and closer to normal but when the windows are brought near the top of the display, they become lighter and more transparrent. The bigger problem which happens intermittently (3 -4 times so far), the entire screen is covered in vertical lines (see below). The mouse or the screen touch does not respond, only hitting power button. I have already had to return this Notebook last year for replacement of a faulty speaker. Fortunately, it was still in warranty then, but isn't now. Did HP have an issue with this disply or make a few lemons of this model? Any help would be appreciated. Thanks