problem with Laptop

[rakhunathan]

I have Dell Inspiron 1100.Whenever I try to type something like Id or use MS Word or Google search or yahoo search I get only continuous lines like this ' ] '. I thought it is a Keyboard problem I changed the Keyboard still the problem persists. I tried Virus scanner no solution. What is the problem and what should I do?Any help will be greatly appreciated.I do not know whether it is a Hardware or Software problem. Excuse me if it is in the wrong forum.
Rakhunathan

[Laser_dude]

it happens only in a particular software or any where in the OS

[rakhunathan]

I am using Windows XP .It happens in all the software including OS.

[rakhunathan]

any help please.do u guys think that if i format and reload the OS it will solve the problem?

[kanu2k7]

well if you have changed the keyboard, then only thing is left i think is to reinstall the windows, but be sure to backup ur important data.