Valve Steam Machine BIOS Update Will Fix Early Red LED Overheating Alerts

Valve is preparing a BIOS update for the Steam Machine that will raise the CPU and GPU temperature warning threshold to 100°C. The change will stop the device from showing a red LED warning while its internal components are still operating within their normal temperature range.

Some Steam Machine users reported seeing the red light during demanding games and stress tests, even when the system remained below unsafe temperatures. In one case, the GPU was running at around 75°C while the CPU reached 81°C, but the light bar still turned red and suggested that the device was overheating.

Steam Support confirmed that the current BIOS triggers the warning earlier than intended. The existing limits activate the red LED when the CPU reaches 95°C or the GPU reaches 90°C, even though the Steam Machine does not begin reducing performance until either component reaches 100°C.

New BIOS Will Set Both Limits to 100°C

The upcoming update will apply the same 100°C warning threshold to both the CPU and GPU. Valve said the system will begin throttling performance at that temperature and will shut down automatically if temperatures continue rising beyond the safe limit.

This means the red LED issue relates to the warning behaviour rather than an actual cooling or hardware failure. The Steam Machine continues to protect itself through performance throttling and automatic shutdown when temperatures become unsafe.

Valve has not shared an exact release date for the BIOS update, but Steam Support said the company is already working on the fix. Once installed, the update should reduce false overheating alerts during demanding games without changing the device’s built-in thermal protection.