Firefox crashes every time

I was told to start a new thread from an earlier thread.

FF crashes every time. It runs for a couple of minutes and then crashes. The blue screen appears and the system restarts.

I have tried disabling all the addons but it didn't work
I also tried running it in safe mode, but the still the crash happens

FF had been running fine till a couple of days back. The crash problem is sudden and constant.

Please help

Gunjan