Messiah

One click turns a Windows 11 PC into a tuned, debloated gaming PC that then looks after itself: drivers, updates, crash checks and cleanup, all automatic. No account needed - an AI assistant (Claude) is an optional switch in the app.

Install

Download the installerEverything; the AI assistant can be switched on later in the app

Open the downloaded file. If your browser asks, choose Keep.
If Windows shows "Windows protected your PC", click More info, then Run anyway. This shows up because the file isn't code-signed (a certificate costs money every year; this project is free). Everything it runs is the open-source code on GitHub.
Click Yes when it asks for administrator rights, read what it will do, then type YES.
Wait 15-30 minutes. It tweaks Windows, installs the apps, optimizes the PC, then the app opens with a welcome page showing what it did.

Afterwards the Messiah app (Start menu and desktop, the icon in the hidden tray next to the clock, or Ctrl+Alt+M) shows what the PC is doing and anything that needs you. Every change it makes can be switched off in its Settings, and it can uninstall itself from there. It never restarts while you're using the PC; pending updates can finish with a restart at night (a switch in Settings).

Installing Windows from scratch

For a new PC, or to wipe and reinstall one: a USB stick (8 GB or bigger) that installs a slimmed-down Windows 11 and sets the PC up by itself. Built like tiny11: no Edge, Teams, Outlook, OneDrive, Xbox app or other preinstalled apps, and a clean Start menu - but Windows can still install every update and repair itself.

Make an install USBSlimmed-down Windows 11 + the kit; erases the stick

On any Windows PC, open the downloaded file and pick the USB stick. It downloads Windows 11 from Microsoft (about 7 GB), slims it down and puts the kit on the stick: 20-40 minutes. (Already have the kit? The app's Maintenance page has the same button, and it can put your settings on the stick too.)
Plug the stick into the new PC, turn it on and press the boot-menu key (often F8, F11 or F12). Pick the USB.
Choose the language, then the drive to install on. That's the one screen to be careful on: delete the old partitions only on the drive you want wiped.
After a few restarts, pick a username and password (no Microsoft account needed). At the desktop a "Setting up this PC" window shows the progress. Keep the stick in until it says it's finished.

What you'll see

The Setting up this PC window with the steps, a progress bar and the time left — While it sets up: every step, the progress and about how long is left.

The app's Overview page: All good - nothing needs you — Afterwards the app says whether anything needs you. Usually nothing does.

The app's History page with charts of start-up time, free space and temperatures — History: start-up time, disk space, temperatures, frame rates and ping over time.

What it does

Removes Windows bloat and ads (Copilot, Widgets, Teams, OneDrive, old Windows parts and ~50 preinstalled apps), turns off telemetry and the built-in AI features, applies gaming tweaks.
Turns memory integrity (VBS) off for gaming performance, which is a small security trade-off.
Installs Git, Steam, Discord, Chrome, WinDbg and AutoHotkey, plus the NVIDIA App on NVIDIA cards.
At every login and once a day, in the background: driver and app updates, cleanup, crash checks and a self-test. It holds off while you play.
Sets every monitor to its native resolution and highest refresh rate, measures your games' frame rate and temperatures while you play, watches the network, and backs up your settings (wallpaper, dark mode, game settings) so a reinstall brings them back.
Updates itself, but only to versions that passed a full test install first.

Prefer a command?

Open PowerShell and paste:

irm https://github.com/Kevincxv/pc-setup-kit/releases/latest/download/install.ps1 | iex

Remove it any time with C:\PCSetupKit\uninstall.ps1 (add -RevertTweaks to put the Windows settings back).