My brother recently installed FireFox on his Windows XP (the only recent change on this laptop). Last night my mother crashed the computer (the only thing she did apparently was click the volume panel too many times causing it to appear multiple times and then not disappear, she then tried to open the desktop shortcut "internet explorer" which then tried to load FireFox instead because it has become the default). From there the computer did not respond and i couldn't close it down normally so i had to switch it off. Today we tried multiple times to use that laptop but although it loads normally and the touchpad/mouse moves correctly, we cannot click on any icons or the startbar or anything so it is completely unresponsive.
Could somebody tell me what to do?