Firefox causing computer shutdowns

I've got a bit of a strange issue here—let me try to explain it clearly.

Basically, Firefox runs incredibly slow whenever I have Flash enabled or when I'm trying to load heavy websites. I might have too many bookmarks saved—maybe I overstuffed it, who knows—but beyond the sluggishness, every single time I boot up my PC and click the icon, it feels like it takes an eternity to launch. In about 99% of cases, the browser crashes and I'm forced to hard-reset my computer. If I try to relaunch it, I get hit with a Blue Screen of Death, and the whole system just restarts. It even happens spontaneously sometimes—as if I’m overloading the PC just by using Firefox. I've noticed this specifically occurs when dealing with demanding sites or anything involving Flash...

Reinstalling hasn't helped—I've even waited around for a newer version—so why does this happen? Interestingly, I don't run into any of this with Chrome. This all started a few months ago.

Chrome actually uses PepperFlash Player—which is maintained by Google, not Adobe Flash Player—so that might be where the discrepancy lies...

It could also just be a matter of RAM usage and hard drive paging. You should probably check how much memory Firefox is eating up compared to your total available RAM.

Larry Martinez5 said:Chrome actually uses PepperFlash Player—which is maintained by Google, not Adobe Flash Player—so that might be where the discrepancy lies...

It could also just be a matter of RAM usage and hard drive paging. You should probably check how much memory Firefox is eating up compared to your total available RAM.

Task Manager shows Firefox at 436.756 MB
I have 3.25 GB of RAM available.

so if you're staring at a blue screen of death right now, it basically means something in your rig is straight up failing on you... honestly, just back up all your important files immediately before everything goes south and then maybe try swapping out your RAM first (just borrow some from a buddy if you don't have a spare lying around) and see if that fixes it...

it's the same deal with your hard drive, man, so you've just gotta troubleshoot by eliminating things one by one until you find the culprit...

Lawrence Barnes64 said:so if you're staring at a blue screen of death right now, it basically means something in your rig is straight up failing on you... honestly, just back up all your important files immediately before everything goes south and then maybe try swapping out your RAM first (just borrow some from a buddy if you don't have a spare lying around) and see if that fixes it...

it's the same deal with your hard drive, man, so you've just gotta troubleshoot by eliminating things one by one until you find the culprit...

Every once in a while, my E drive disappears from Internet Explorer when I reboot—it comes back eventually—and HD Tune has been flagging an error on its controller for about a year or two now. But here, the Blue Screen isn't constant; sometimes Firefox just closes on its own, and if I try to reopen it right after it crashes, I get hit with the Blue Screen and the whole computer restarts.

Which version of Firefox or Flash are you running? Just a heads-up, a BSOD doesn't always mean your hardware is toast. It could easily be a buggy driver or some software acting up... To start, maybe try running a scan on your PC with MBAM.
It might also help to clear out some junk using CCleaner.
Once you've installed the latest versions of Firefox and Flash, let me know if things seem any better!

Christian Rodriguez47 said:Which version of Firefox or Flash are you running? Just a heads-up, a BSOD doesn't always mean your hardware is toast. It could easily be a buggy driver or some software acting up... To start, maybe try running a scan on your PC with MBAM.
It might also help to clear out some junk using CCleaner.
Once you've installed the latest versions of Firefox and Flash, let me know if things seem any better!

I already ran CCleaner and checked with Malwarebytes—nothing worked. I might need a new Flash update, though I did install the latest version just a few months back.

The disk was flagged with an ultra DMA CRC error—but honestly, I suspect it’s just a fluke since my old drive had the same issue. It's likely a motherboard problem—every drive I plug into that specific port runs into this exact same trouble—so the disk occasionally disappears from Internet Explorer and forces a full system reboot, though that isn't tied to why Firefox keeps crashing

So, what’s the deal with the other ports? Did you try upgrading Firefox or maybe just doing a clean reinstall? Try disabling Flash and see if that changes anything. Also, could you give me a little more detail on your hardware? Just let me know what kind of setup you're running.

Are you perhaps using integrated graphics?

Kimberly Gomez34 said:Are you perhaps using integrated graphics?

I don't have one—just a random 1GB card I picked up about two years ago.

Christian Rodriguez47 said:So, what’s the deal with the other ports? Did you try upgrading Firefox or maybe just doing a clean reinstall? Try disabling Flash and see if that changes anything. Also, could you give me a little more detail on your hardware? Just let me know what kind of setup you're running.

Quick update—upgrading hasn't helped at all... I've tried everything.

I'm running an Intel Core 2 Quad Q6600 2.4, with 3.25GB of RAM, 32-bit Windows 7, and a 1GB graphics card—plus a few different drives. Personally, I think my bookmarks might be the culprit; I have about a million of them, which likely bogs down Firefox and causes the crashes. I also recently installed BlueStacks to run Android on my PC, and that's slowed things down even further—everything feels sluggish now. Every time I click something, there's a massive delay before Windows Explorer, Chrome, or Firefox will actually open—and Firefox is definitely the worst, especially with this constant crashing issue.

Hardware acceleration seems to be the culprit—I noticed it happening in both Firefox and Chrome, and turning it off provided an immediate improvement. I'm thinking about disabling it across the board, including in Flash if that's even possible—though I'm not so sure about the OS itself since I just installed a brand-new graphics card :/—any advice?

I’ve seen this workaround before—disabling hardware acceleration—but I don't really think it's a real fix. If I remember correctly, hardware acceleration for things like Flash involves using the graphics card (the GPU), so by turning that off, you're just forcing the CPU to handle all that processing instead. We should probably be looking for the actual reason the GPU is acting up—maybe it's underpowered, or perhaps there's an issue with how the browser communicates with the GPU.

Glad you got it working, but I guess we should probably dig a bit deeper into the root cause.

The GPU is just some old 1GB card—I think I paid about $100 for it maybe two or three years back. It’s nothing special—but I did hit a Blue Screen of Death today—only when I was booting up the system and everything was live; then the whole thing just crashed. That said, web browsing and general PC work feel much snappier now—not that I should probably just wipe and reinstall Windows—but it's definitely faster than last week when every single click felt like a struggle.

Could you explain how the browser actually communicates with the GPU? I'm not quite sure where to look to find that info.

Carl Nguyen5 said:Quick update—upgrading hasn't helped at all... I've tried everything.

I'm running an Intel Core 2 Quad Q6600 2.4, with 3.25GB of RAM, 32-bit Windows 7, and a 1GB graphics card—plus a few different drives. Personally, I think my bookmarks might be the culprit; I have about a million of them, which likely bogs down Firefox and causes the crashes. I also recently installed BlueStacks to run Android on my PC, and that's slowed things down even further—everything feels sluggish now. Every time I click something, there's a massive delay before Windows Explorer, Chrome, or Firefox will actually open—and Firefox is definitely the worst, especially with this constant crashing issue.

What kind of power supply are you running? You mentioned having a few drives? Like, how many are we talking here? It’s possible your PSU just can't handle the load, making the whole system unstable and causing those crashes... maybe try unplugging a few 🤣 hard drives, leave just the essential one where the OS is sitting, and see if things settle down

Lawrence Barnes64 said:What kind of power supply are you running? You mentioned having a few drives? Like, how many are we talking here? It’s possible your PSU just can't handle the load, making the whole system unstable and causing those crashes... maybe try unplugging a few 🤣 hard drives, leave just the essential one where the OS is sitting, and see if things settle down

I've tried three different power supplies and I know I picked a good one—so that isn't the issue. It’s likely down to the motherboard or the graphics card itself, since everything else seems solid. Does anyone know where I can find a Flash video showing how to disable this GPU acceleration? I can't seem to track down a decent video online.

I ran into the exact same thing, but once I updated my drivers to the latest NVIDIA Control Panel, everything started running smooth again.