r/Steam • u/aCti0N_j4Cks0N • 12h ago
PSA PSA: Steam crashing at launch since the Oct 13 client update? If you’re on an AMD Radeon card, it’s an AMD driver bug, not Steam
Heads-up for anyone whose Steam started crashing instantly at launch after the October 13 client update, where reinstalling Steam, verifying, and clearing the cache all do nothing.
If you’re on an AMD Radeon GPU, this is probably not Steam’s fault. A component in the Radeon driver (GameManager64.dll, AMD’s game-detection hook that injects itself into Steam) goes into a crash loop during Steam’s startup and takes the client down with it. Event Viewer shows it as an ntdll.dll / c0000005 error, which makes it look like Steam or Windows, but it’s the driver.
How to tell it’s this:
- It only started after the Oct 13 Steam update.
- Steam launches fine if you fully quit your overlay/peripheral software first (Razer Synapse, Corsair iCUE, etc.) and start Steam before they load.
- A game launcher running in the background can trigger it too (the EVE Online launcher does it for me).
- It goes away completely if the AMD driver is uninstalled (not a real fix, just proof of cause).
Workaround until AMD patches it: let Steam fully start before any of that overlay/peripheral/launcher software loads. Launch order is the whole trick.
I’ve reported it to both AMD (with a full crash dump) and Valve. Posting here so people stop wiping their Steam installs over an AMD driver bug. Anyone else hit this since mid-October on a Radeon card?




