Fake Windows 11 Blue Screen of Death_

No. This is a completely fake, simulated Blue Screen of Death that runs as a normal web page in your browser. It does not crash, modify, slow down or harm your computer in any way. Nothing is installed and nothing is changed. Closing the tab or pressing Escape ends it instantly.

Click anywhere on the blue screen or press Enter Fullscreen. The fake error fills the entire display, exactly like a real Windows 11 crash. Move the mouse to show the exit button, or press Escape to leave fullscreen. This is the setting that makes it convincing as a prank on a friend's PC.

Press the Escape key to exit fullscreen, then close or navigate away from the tab. You can also press Alt+Tab (Windows) or Cmd+Tab (Mac) to switch away. Because it is just a web page, there is no risk and no cleanup needed.

No. It runs entirely in the browser using HTML and JavaScript. There is nothing to download or install, and it works on any modern browser on Windows, Mac, Linux, iOS and Android.

Yes. Pick from common real stop codes like CRITICAL_PROCESS_DIED, IRQL_NOT_LESS_OR_EQUAL and MEMORY_MANAGEMENT, switch between the classic blue and the newer Windows 11 black variant, and adjust how fast the percentage climbs.

A real Windows BSOD ignores all input: the mouse cursor disappears, Escape does nothing, and the PC collects a crash dump and restarts by itself when the counter hits 100%. With this fake version, moving the mouse reveals an exit button, Escape leaves fullscreen, and Alt+Tab still works — because it's just a web page. Rule of thumb: if a blue screen reacts to your keyboard, someone is pranking you.

The cryptic codes on a real BSOD do mean something: CRITICAL_PROCESS_DIED — an essential Windows process ended unexpectedly; IRQL_NOT_LESS_OR_EQUAL — usually a faulty driver touching memory at the wrong priority level; MEMORY_MANAGEMENT — RAM or memory-addressing problems; PAGE_FAULT_IN_NONPAGED_AREA — Windows referenced memory that wasn't there, often RAM or driver related; SYSTEM_SERVICE_EXCEPTION — typically a driver or system-file error. This simulator can display any of these real codes — or cycle through them for extra drama.

On a real crash screen the QR code — introduced in Windows 10 — links to Microsoft's support page about the stop error, alongside the printed link windows.com/stopcode. This simulator renders a matching QR block in the same position, so the fake screen passes the glance test.

The crash screen has evolved over 30+ years: early Windows used blue text-mode screens full of hex dumps, Windows 8 introduced the sad face and plain language, Windows 10 added the QR code, and some Windows 11 builds shipped the same layout in black. This simulator includes both the classic blue and the Windows 11 black variant — switch between them with one click.

Yes. Go fullscreen and the percentage climbs and loops continuously, making a convincing crash-screen screensaver for parties, streams, or a mischievous office display — optionally cycling through stop codes. More retro fun: the Matrix, Windows 95, Windows 98 and Star Wars screensavers.

Technically it's completely harmless — it's a browser tab: nothing is installed, no files are touched, and closing the tab removes every trace. Use common sense though: don't prank someone mid-presentation or with unsaved work open, and reveal the joke before anyone calls IT or forces a reboot “to fix it”.

Yes, completely free. No account, no ads, no watermark. It is one of 161 free browser-based tools at jasperbernaers.com.