On my wifes computer I have a new issue. It is a Dell Inspiron 600m laptop running XP pro with all the updates. Recently I walked into the room where the computer was running to find it locked with a bluescreen containing the message "stop: c0000221 unknown hard error\system root\system32\ntdll.dll" Restarting produced the same result. I did some searching and found the cure to this problem was to replace the corupted file "ntdll" which I did using system recovery with the origional XP disk. The computer restarted successfully after that but now has a new issue. The start button has enlarged itself to cover the bottom half of the screen and is so big you can only see the top of it and cannot even see the word start in it. I can lower it down by dragging the top of it with the taskbar unlocked but cannot resize it to normal and I cannot see the rest of the taskbar either due to it's size. It also takes the computer longer than usual to boot. Anyone see this before? Any ideas on a cure? I tried updating the video driver which did not help. I also looked everywhere for a setting to change this with no success.