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My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

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New Contributor

My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

I am running Firefox 11, but this issue happens since other versions. I also have A LOT (more than 100) tabs opened across multiple tabs groups. Sometimes firefox freezes, and I get the "waiting" mouse sign from my Windows 7 64bits...its useless to try anything..the whole computer becomes unresponsive, and eventually it crashes.....if I hit the restart button, or if the computer crashes, the computer restarts and says after the initial boot image that no operating system was found in the drive selected....so I have to turn the computer off...and then on again to make it work properly....then I can open Firefox back and everything is normal, (fortunately i dont lost my tabs) and there is no indication that firefox had ever crashed...I can continue with my previus work, and if its going to crash again or not is just a matter of luck....

17 REPLIES
Site Moderator

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

I'm wondering if you don't have other issues like malware or something other going on with your computer. Try Upgrading your Graphics Driver. If that doesn't help, try to Update Windows, and also Check for Malware (Use Malwarebytes to check).

New Contributor

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Thank you Tylerdowner, but I always have all my drivers and softwares updated to the theirs latest versions and I also have very strict security policies on my computer to avoid malware at all costs...the only software crashing is unfortunately the Firefox

Site Moderator

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

You may have a problem with your hard drive if you get such an error message occasionally.

You can try to ask advice at a Windows oriented forum.

New Contributor

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Thank you cor-el, but I already have run 2 times the windows disk checker for bad sectors and etc... and no errors were found...those crashes are more common when I have flash or PDF open...but still it's not always (google maps sometimes dot it also)

Site Moderator

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

And you have an updated graphics card driver? Try going into the firefox button, then Options, Advanced and uncheck "use hardware acceleration". Does that help?

New Contributor

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Yes...I have it always updated....


I unchecked it! But since it has been an intermittent error, I will have to wait to see if the crashes stopped...(but only after the next week, because I am traveling tomorow Smiley Very Happy ). So I guess you have 1 week to help other desperate people out there Smiley Wink
New Contributor

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Ok...i just got another crash....this time I was under VMware and firefox opened in the background....I am starting to agree that maybe this is a Windows issue...because this time I got a BSOD with ntfs.sys on it....

Site Moderator

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Yes, if you are getting a Bluescreen it is almost certainly not a Firefox issue, because by nature, Firefox alone can't cause a bluescreen. I would say you can either try to diagnose the issue yourself using the Windows Forums cor-el posted, or take your PC to a reputable local pc repair shop (ie. not Geek Squad).

New Contributor

Re: My Firefox is locking down and then crashes the whole computer...then the computer restarts and it says that no operating system was found....

Hahaha...We don't have geek squad here in brazil Smiley Wink