Hi all, I have a severe problem with vista premium SP2.0 with just one partition. Vista was installing updates and supposed to shutdown last night. But, don't know what happened. All that I have seen is my child pressing buttons etc this morning. When I try to switch on before log in screen I get the error message Ordinal 2000 could not be located in the dynamic link library USER32.dll, with the title of the window displaying "LogonUI.exe - Ordinal not found", after logging in it comes up with another window with title "AtBroker.exe- ordinal not found" with the message -The Ordinal 2000 could not be located in the dynamic link library USER32.dll. Some more windows with messages "windows problem reporting has stopped working", "Transitions accessible technologies between desktops has stopped working". Also another window with title "explorer.exe ordinal not found" and message , Ordinal 2000 could not be located in the dynamic link library USER32.dll. All that I get is a black screen with the mouse pointer placed somewhere nothing happens when I move the mouse pointer. All that I can do is shutdown or restart.This is same even in safe mode. I have tried to restore to previous many restore points that I have, but none of them work. comes up with error trying to restore to previous restore point. I have tried to fix with a repair disk found online, nothing has progressed positively. I don't know what the problem is. I have done Memory Diagnostic tool. Nothing has been found. I have done Startup repair, which too found no errors. Any help is much appreciated, Thanks in advance KL