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 files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem
Profile Backup and Restore

• http://kb.mozillazine.org/Profile_backup
• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP in front of the numbers, click it and select Submit.

Using your mouse, mark the most resent 7 - 10 crash reports, and copy them. Now go to the reply box below and paste them in.

If you can't get Firefox to open, you will have to do this the hard way. Open the file browser / explorer on your computer. Enter this;

%APPDATA%\Mozilla\Firefox\Crash Reports\submitted

Copy the last 5-7 Recent File Names in the folder, including the date and time created. Post all the information in the reply box below.

You can try to disable OMTC and leave hardware acceleration in Firefox enabled.

• about:config page: layers.offmainthreadcomposition.enabled = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

You can try to disable hardware acceleration in Firefox.

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
• https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

Here are my top most recent crash reports. I cannot open Firefox at all without crashing, even when I try SHIFT + launch FF. My next coarse of action is to uninstall and reinstall. But I do not have Sync enabled. Would there be an alternative to manually backup my bookmarks and such?

bp-e7c875fa-ab43-4c10-9e36-914382141203 bp-43f37dae-f382-4ebe-81de-874d52141203 bp-1d9fd693-5b36-41dc-b7f2-b61f22141203 bp-c76fdbbc-7d16-44a8-8483-6b5d72141203 bp-51062103-564d-41f6-b5e0-0feb42141203 bp-70e3ab45-c7f6-4b5f-a3dd-01d9c2141203 bp-799ba089-4b2b-49da-bfc0-4f2d22141203 b122b9b5-0d63-4968-8062-71ae2ed49b26 bp-c862b150-7318-4865-af76-69eeb2141117

Can you bring up the Profile Manager to create a new profile?

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

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 files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

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