Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD after Firefox update, Error c000021a

4 Days Ago   #11

Windows 7 Professional 64bit

Yes stock cooling, Antec Three Hundred Black Steel ATX case.

I have a Logitech wireless mouse, wireless Dell keyboard, and wired HP printer that have all been connected since I built the computer.

I added a Cateck USB 3.0 Hub 3 months ago.

My System SpecsSystem Spec
3 Days Ago   #12

Windows 10 Pro

I don't assume you know if the Crucial SSD firmware is up to date?
My System SpecsSystem Spec
3 Days Ago   #13
Bat 1

8.1 home x64

Hard Drives Crucial M4 CT064M4SSD2 2.5" 64GB (boot drive) Western Digital Caviar Black WD1502FAEX 1.5TB

By posting the SSD is the (boot drive) does that mean the OS is installed onto it ? If so, then You should disconnect the storage drive while attempting OS repairs.
My System SpecsSystem Spec

3 Days Ago   #14

Windows 7 Professional 64bit

I built this machine on Apr 10, 2012. It has run flawlessly, daily until now. I have never updated the firmware on the SSD. It looks like Crucial has an update available. It was released Apr 2, 2013.

Hi Bat 1,
Yes, the OS is installed on the SSD.
My System SpecsSystem Spec

 BSOD after Firefox update, Error c000021a

Thread Tools

Similar help and support threads
Thread Forum
BSOD unknown reason, error c000021a. Please help
Hello guys, my computer will not startup. It crashes at the Windows startup screen with a BSOD that states: STOP: c000021a verification of a KnownDLL failed. Sorry I don't know how to get you guys my system or dump files without being able to login windows to run the programs. Things I've...
BSOD Help and Support
BSOD c000021a Fatal Error. Pls Help
Hello Guys. I have this problem a few days. I tried a lot of thinks what I found on internet but nothing works, I m really tired. Please help me. I need my computer back, because I have a lot programs in there. I think that this problem started when I connect second monitor in HDMI. Is it...
BSOD Help and Support
BSOD playing ragnarok then restart, error c000021a
I was playing ragnarok online then suddenly i lag so much my CPU runs on 100% i cant click i cant move nothing then i finally move my cursor so i restarted i got BSOD c000021a i got this month ago but i read online says that just reformat it then your good i dont know if that was real to fix the...
BSOD Help and Support
BSOD on startup c000021a {fatal system error}
Hey fellas, i restarted my compure about an hour ago for it to complete a windows update, on the logout screen and showed: installing updates, it jumped from 10% to 20 and thirty and the skipped to shutting down. when starting back up again i got a BSOD saying: STOP: c000021a {fatal system...
BSOD Help and Support
BSOD - Stop: C000021A {Fatal System Error}
I have been having some issues with various BSOD's, I listed my most previous BSOD here on the forums and thought that I might have had this BSOD issue fixed (well, hopefully!) - it was related to AVG and possibliy conflicting with MSE, as no virus db was listed, you can see it here on the forum ...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 00:28.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App