MyRGB 0.4.0 is out, and it takes the administrator prompt out of the everyday path.
The admin problem
Fan control has been the most-asked-for feature and the most annoying one to actually use. Temperatures and motherboard fans are only reachable to programs running as administrator, so the choice was a MyRGB that ran elevated all day, or no CPU temperature at all.
0.4.0 splits that in two. One permission prompt on the Cooling page sets up a small helper that does the protected reading, and MyRGB carries on running like any normal app.
The helper is deliberately boring. It starts with Windows, serves temperatures over a pipe only your own user can open, and takes its orders from the app. The safety rules never left MyRGB: flat out at 85 °C, and if MyRGB ever closes without warning every fan goes back to its own control within seconds. When MyRGB updates itself it notices the helper is older and asks for one more prompt to bring it along.
Fans can go to zero now
The old build enforced a 30% floor. That was the cautious default and it was wrong for anyone who has a fan they genuinely don’t need spinning.
Fans now go all the way down to 0%. The honest caveat is that some fans won’t spin below their own hardware minimum no matter what you ask, so 0% may mean off or may mean whatever that fan does. Yours decide, not ours.
Curves got the full treatment too: five presets from Silent to Full speed, a live dot that rides the curve showing the current temperature and the exact speed being requested, double-click to add a point, right-click to remove one.
Also
Update checks now run hourly while MyRGB is open rather than only at launch, and a banner you dismissed stays dismissed until a genuinely newer release turns up.
Updating
Run the new installer over the old one, or let the banner do it. Presets, layout and settings stay put. The helper arrives when you turn it on in Cooling.
The installer grew from 71 MB to 97 MB, because the helper is a second self-contained .NET runtime rather than something that assumes what’s on your machine.
Still a beta, still free, still open source. Still not code-signed, so Windows will warn you about an unknown publisher, and the SHA-256 is on the download page so you can check the file rather than trust us.
If something doesn’t light or a device is missing, that’s the most useful thing you can tell us. Issues or The Bench, with your device models and what you saw.