A Guide to the “Worker Thread Returned at Bad IRQL” Blue Screen of Death Error


STOP code: 0x000000E1

If you’ve found your way here, you’ve had the good instinct to document the errors you’ve encountered and search for the solution. Fortunately, this problem is easy to resolve: and after the pictures below, I’ll tell you how.

A photo of this error on versions of Windows preceding 8.

Something like what this error looks like on Windows 8.

There are two possible problems you have here — outdated drivers of conflicting antivirus apps!

To check for outdated drivers, open your Start Menu/Screen, click Search, and type in Device Manager. In Device Manager, you’re going to want to right click the entries for each of your devices and select Update Driver. Windows may not be able to find the newest driver for this device — if that happens, go to that driver’s manufacturer’s webpage and search for it there, uninstall the driver, or use our Driver Reviver program to automatically update all of your drivers.

If you have conflicting antivirus apps, your problem is that McAfee and Microsoft Security Essentials (or any other combination of two antivirus apps) are fighting over your machine. To remedy this, uninstall one of them and go on with your day. The reason why these two programs conflict is because they’re trying to use the same system resources to perform the same — or similar — tasks. Determine the one that’s more effective and delete the other.

If you’re still having issues after following all these steps, then you may have defective hardware or another issue, like malware, causing a false BSOD.

After you’ve verified your drivers and antivirus programs, download Malwarebytes and click “Full Scan” to ensure that there’s no nasty piece of software causing the problem that led you here. Another advisable path is a system restore to an earlier point or, if following all of these steps haven’t helped you, doing a full reinstallation/refresh (on Windows 8) of Windows.

Recommended by ReviverSoft

Registry Reviver will find and fix problems, and restore optimum PC performance quickly, easily and safely.

download now

PC Problems?

Take a FREE
Windows Registry scan
to find errors that can
cause PC problems.

Didn't find your answer?
Ask a question to our community of experts from around the world and receive an answer in no time at all.

our products
See all products →

We develop products that help Repair, Optimize and Maintain your computer for you

Driver Reviver
Restore maximum performance and functionality to your PC's hardware.
Registry Reviver
Restore maximum efficiency and effectiveness to your PC's Windows Registry.
Security Reviver
Quickly and safely remove security threats, prevent them from reoccurring and keep your PC protected.
subscribe to our newsletter

Receive free tips and advices how
to repair, maintain and optimize your PC

Edit translation
Machine translation (Google):
Copy to editor
or Cancel