Mostly websites are not open on internet explorer and other browsers in my laptop

Question

mostly web sites are not open in internet explorer and other web browsers in my laptop.

Answer 1

Rob,
Many thanks for your reply.  It is appreciated greatly.  I have added text against each of the points that you raise.
troubleshooting Addons is somewhat complex.....as from this side we do not know which addon may be causing the problem, so the
only recourse is to disable the types of addons that commonly cause problems in IE (for security and usablility reasons some older addons that you may have used previously with IE8/XP are no longer compatible with newer versions of IE that you are now using)....
The following instructions will stop your Toolbar and Browser Helper addons from loading in IE.
Start>Control Panel>Internet Options>Advanced tab,
uncheck "enable third-party browser extensions".
close any open IE windows and restart IE for the changes to take effect.
[GotaQ: Yes, did this but the problem then is that IE won’t open for me.  There is no icon in the start menu or task bar
and routes such as using a command prompt or ‘run’ instruction don’t work.  When I try this I get a window on screen that flickers for a bit and then disappears.]
Alternatively, your problem with keyboard input is most likely being caused by a form filling addon or a finger print reader
addon? Note: some addons like the Google toolbar have multiple features like form filling, you can disable the GTB's form filling features from its settings dialog (click the 'spanner' icon on the toolbar)
Use Tools>Manage Addons>Show all addons to locate any such addons and use the Addons Manager to disable them. (close and
reopen any open IE windows for the full changes to take effect).
[GotaQ:  I tried disabling all of the add-ons in Google Chrome and the key-stroke mapping problem persisted, unfortunately!]