please help me, world.

I am not sure what help you require. It would appear you have managed to send the above message using firefox.

can anybody help me?

Are you able to give more details please.

Are you writing these messages on another computer, (otherwise firefox apparently does work).

1. exactly when do you see the message
2. has firefox worked previously on the same computer
3. what is the exact wording, (maybe attaching a screen shot would help)

Have you looked at some of the other articles such as

• Firefox won't start - find solutions <-- click link with mouse
• "Firefox is already running but is not responding" error - How to fix

i write this message on other browser.... i install the firefox setup on my friends computer that had low requirement than me.. but firefox can opened idk.. after i write the web-address it shows not responding... and sometimes if i click firefox to open it, when it opened it shows not responding

If another browser works but firefox does not then have a look at:

• Firefox can't load websites but other browsers can