Have you cleared the cache as well? If that does not help, some troubleshooting may be in order.

• https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting
• http://kb.mozillazine.org/Standard_diagnostic_%28Firefox%29

Maybe you could explain the situation in more detail.

Are you able to open more windows once Firefox is running ?
for instance

• right clicking (Windows) a tab and using the option move to new window
• dragging a tab up and on to the desktop

Exactly how did you open multiple windows previously ?

Or are you thinking of popup windows that a single site spawns, or for instance mediaplayers.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

John, I'm not able to open more windows after i start up firefox. It will only allow me to have one window open and it won't allow me to move tabs to new windows. I didn't really use other windows cause that's a bit messy. I'm thinking pop up windows that some chat sites use (exp: teenchat). I also realize that, when i was trying the troubleshoot steps, I can't go to add-ons either under the firefox tools.

I tried restarting firefox but that doesn't help. I've tried everything on the trouble shoot page that finitarry sent. Doesn't work

Try to open a new window by adding a space and -new-window about:blank to a copy of the Firefox desktop shortcut.

• https://developer.mozilla.org/en/Command_Line_Options

I really don't understand how to do that and don't have a lot of time to try and figure that out atm...

I don't really understand how to do that and i haven't really gotten much time to read and try and understand that...

You can make a copy of the Firefox desktop shortcut and open the Properties of that shortcut via the right-click context menu.

You can add a space and the "-new-window about:blank" text without quotes to the current command (target) line to open the about:blank in a new window if you use that desktop shortcut to launch Firefox.

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

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 careful not to copy corrupted files.

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

Okay, so i think it's my current profile that is causing the problem. I made a spare profile on my computer and firefox works find on there.