We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash ID's to help us learn more about your crash. Since you are able to start in Safe Mode please do the following in Firefox:

1. Enter about:crashes in the address bar (that's where you enter your website URL) and press Enter. You should now see a list of submitted crash reports.
2. Copy the 5 most recent crash ID's that you see in the crash report window and paste them into your response here.

Thank you for your cooperation!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

8ea885d5-335c-4de1-b048-8a06c7d9b7b3 10/05/2013 10:24 
bp-1b87d163-4cd7-4022-abc9-cdcab2130505 05/05/2013 21:39 
3e05ecb6-4c16-4676-983b-7cef005d1c5f 05/05/2013 17:48 
76899642-c514-4768-b729-623b63793f84 05/05/2013 17:42 
971d5dfc-0ef5-4a0c-ad1c-3f6ea0f59249

Here are the 5 most recent crash ID's made a bit clearer

8ea885d5-335c-4de1-b048-8a06c7d9b7b3 
bp-1b87d163-4cd7-4022-abc9-cdcab2130505 
3e05ecb6-4c16-4676-983b-7cef005d1c5f
76899642-c514-4768-b729-623b63793f84
971d5dfc-0ef5-4a0c-ad1c-3f6ea0f59249

Try turning off hardware acceleration in Firefox:

You might need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).

Then perform these steps:

• Click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
• In the Firefox options window click the Advanced tab, then select "General".
• In the settings list, you should find the Use hardware acceleration when available checkbox. Uncheck this checkbox.
• Now, restart Firefox and see if the problems persist.

Additionally, please check for updates for your graphics driver by following the steps mentioned in the following Knowledge base articles:

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

Upgrade your graphics drivers to use hardware acceleration and WebGL

Did this fix your problems? Please report back to us!

Ref:

• bp-1b87d163-4cd7-4022-abc9-cdcab2130505 Firefox 20.0.1 Crash Report [@ CResource<ID3D11Resource>::InvalidAlignment(D3D11_BOX const*) ]

• Bug 819028 - [Win7] crash in gfxWindowsPlatform::UpdateRenderMode @ CResource::InvalidAlignment (d3d11.dll, after installing KB2670838)

All fixed now Thanks Alice.

You're welcome, sean.

So, what fixed it?

Find Use hardware acceleration when available checkbox. Uncheck this checkbox.

That's what fixed it 

 Thanks again Alice

I also met a number of errors like this when playing the game online Kizi 2 Kizi 2 and y8y8 y8y8 as I'm waiting for my company in the technical review and correction.

Thanks AliceWyman. I have been corrected

Thanks sean68.