Valve has landed on an official cure for the all-new Steam Machine’s “Red Line of Death,” and it’s surprisingly simple: Clear the CMOS. Yup, that’s it.
The so-called RLOD (named after the infamous Windows Blue Screen of Death) occurs when the Steam Machine fails to boot. Half of the RGB light bar turns solid red, while the other half “breathes” red. Though Valve’s support page previously linked these signals to a dead GPU, it now says most RLOD failures are caused by BIOS configuration or firmware issues.
In a Reddit comment, the company says that clearing the CMOS can reset low-level settings and retrigger memory training, which brings systems back to normal with a blue light on the next boot. Users need to unplug the Steam Machine, let it discharge any residual power, then follow a brief power-button sequence to access the LED color mode and choose green for a full CMOS reset.
After that reset, the machine may take longer than usual to start as it retrains memory, but it can return to normal function.
But a persistent red line after this process can indicate a genuine hardware failure, which would require official repair or replacement. As previously mentioned, the likelihood of this happening quickly depends on Valve’s stock situation, since the Steam Machine sold out quickly.
The number of affected units is thought to be limited, primarily in early batches.
