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Firefox Crashes Silently at Start-up

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Firefox has been crashing on start-up for the past few weeks. I've tried safe mode, a profile reset, a clean re-install, and several clean installs of different versions (4.0, 4.1, 5.0 and 6.0b1) in attempts to resolve this, all without success. Occasionally Firefox will start successfully and will stay stable once it has, but this is a very rare occurrance. I've run scans with Avast Antivirus, Malwarebytes and SUPERAntiSpyware, which all came back clean.


The only changes to the system around the time the problem started were CPU and RAM upgrades (with new, known-good parts) and a BIOS update required to use the new CPU. Firefox is the only program crashing in any way/shape/form since this upgrade.

Firefox has been crashing on start-up for the past few weeks. I've tried safe mode, a profile reset, a clean re-install, and several clean installs of different versions (4.0, 4.1, 5.0 and 6.0b1) in attempts to resolve this, all without success. Occasionally Firefox will start successfully and will stay stable once it has, but this is a very rare occurrance. I've run scans with Avast Antivirus, Malwarebytes and SUPERAntiSpyware, which all came back clean. The only changes to the system around the time the problem started were CPU and RAM upgrades (with new, known-good parts) and a BIOS update required to use the new CPU. Firefox is the only program crashing in any way/shape/form since this upgrade.

Modified by Trespasser249