I'm so sorry, but this way beyond my abilities. I went to the Marriott forum. the ad was there but not strobing. I clicked on the windows icon and then the Prt Sc simultaneously. Screen hesitated for a second. Then came on here and tried to "paste", which I usually do with hitting Ctrl and V, but nothing happened.

Obviously I must be the only person having this problem. Maybe somebody else will and they can help.