Hello fras2288,

Sorry you are having problems.

Your crash reports indicate you are using 77% of your available memory.

Try in safemode and with plugins including FlashPlayer disabled. Can you confirm (or comment otherwise & include Crash IDs) that you do not then get crashes ?

Diagnose Firefox issues using Troubleshoot Mode

Try running normally but just with Hardware Acceleration (HA) disabled.

Upgrade your graphics drivers to use hardware acceleration and WebGL

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.