Photo projects in the histogram area while processing in ACR 9.7

Recently, while processing images in Adobe Camera RAW 9.7, a portion of the photograph that I am processing projects in the histogram panel. After a few seconds, the image goes away. During the same time frame, my computer (new and with plenty of memory and a great graphics card) powers down without warning.  Extensive diagnostics run by the computer manufacturer reveals no issues.  Please help!!!