KB891711 is a Windows update which has caused problems with some OS's, including Win 98se.
If you read the discussion on the forum below, it will explain more. Some friendly advice: If you Google the contents of any error message, as it appears on your screen, invariably it will come back with a wealth of information on the problem and its manifestations!
First I dont have a disk for this old laptop. Its a Toshiba I went to system tools then system info. then tools and had Dr. Watson take a pic. It came back with this message- window component has altered window system files- module name KB891711.exe- window KB891711 componemt. I have window 98 any help out there. I dont know what it meams