This Is a Drill: Win10 Blue Screen, Summon at Will

The blue screen seems to be something many IT Home users don't want to see. Although in Win10 you can still scan the QR code at the bottom of the screen to participate in Microsoft interactions and win a big... well, the benefit of the blue screen is that it provides problem information for professionals, such as the current memory dump, which helps with troubleshooting and solving problems. Of course, the information given by the default blue screen alone may not be enough; in that case you can enable Win10 blue screen detailed information display.

▲ This QR code actually “moved up”... VM12 virtual machine test results

Microsoft has arranged a way to manually “summon” the blue screen in Windows10, which is **hold the right Ctrl key, then press Scroll Lock twice in a row  ↓ **. However, this feature is locked by default, presumably out of fear that accidental operations by ordinary users would cause trouble. But for professionals and users who like to tinker, you can manually unlock this skill.

The specific method is as follows:

1. Go to Computer Properties → Advanced system settings → Advanced → Startup and Recovery → Settings, as shown below ——

2. In “System failure”, uncheck “Automatically restart”, and in “Write debugging information” select “Automatic memory dump” (the default), then click “OK”, as shown below ——

3. In the Cortana search bar, type regedit, and press Enter to open Registry Editor

4. USB keyboard users navigate to (suitable for most users)

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\kbdhid\Parameters

PS/2 keyboard users navigate to (now less common, mostly seen on old machines from over a decade ago)

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\i8042prt\Parameters

5. Create a new DWORD (32-bit) Value (as shown below), named CrashOnCtrlScroll. Note that there may be a bug here that, when the default value is 0, has a certain chance of causing the keyboard to temporarily fail (the chance isn't that high, but mistaken operations such as USB keyboard users modifying the PS/2 registry or vice versa have a higher chance of causing temporary keyboard failure). You can change 0 to 1 via copy-paste or similar methods, or via the On-Screen Keyboard's handwriting feature; anyway you have to change 0 to 1, and after “OK” the keyboard will recover; you can also use the mouse to delete the value directly, and the keyboard will recover immediately as well

▲ USB keyboard

▲ PS/2 keyboard

6. Change the value data to 1, click “OK”, then restart the system to apply the configuration, as shown below ——

▲ USB keyboard

▲ PS/2 keyboard

At this point, hold the right Ctrl key and press Scroll Lock twice in a row, and the exciting blue screen summon succeeds. Note that this is a real blue screen, not just a picture appearing; you need to restart the computer to resume use. So how this summoning technique should be used appropriately is something everyone still needs to think twice about. Also, if you want to use the blue screen for some ulterior purpose, you'd better hope the other party doesn't understand computers or English, because the final “Stop code：MANUALLY INITIATED CRASH” (stop code: manually initiated crash) has already given you away...