Desktop Picture randomly changes to all black

Brand New PC. Everything is great but since I switched the desktop background pic(which was a slideshow scene that changed every now and then) to a personal pic on my hard drive the desktop picture goes to black randomly. It seems to come back on it's own given time but I can't figure what is causing this.
Also - since this forum seems to be geared more toward Win 11 software(doh!) is there a place you folks recommend for hardware/bios info? Especially regarding 9800x3d Bios settings. EXPO is off and I hear I should turn it on.