My google chrome is no longer working. HELP?

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When I click on google chrome there is a error message displayed from windows saying that "google chrome has stopped working".........the same happens when I try to load firefox.Now I have no internet on that laptop hence I cannot download new internet....what do I do???? it wont even let me uninstall!!

I have windows vista 32- bit

Please help....I have tried system restore but no success. I was using the old chrome for quite a while and only yesterday that stopped working too. but that one opened but displayed a blank screen and I did the bad mistake of deleting it. Now I only have the new chrome and it displays the error message "google chrome has stopped working" as mentioned above.