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2.15 Post Status Checker
Post Status Checker (PSC) diagnoses the computer when users power on the machine.
The LEDs light up to show what component is running into an issue. They emit red, yel
low, white and yellow-green lights to indicate, respectively, the CPU, memory, VGA and
storage are not detected or fail. They will remain lit until the issue is fixed. The lights go
off if the four mentioned above are functioning normally.
Component
LED Indicator
Status
CPU
Solid Red
indicates CPU is dysfunctional.
DRAM
Solid Yellow
indicates DRAM is dysfunctional.
VGA
Solid White
indicates GPU is dysfunctional.
BOOT
Solid Yellow-Green
indicates boot device is dysfunctional.
CPU
DRAM
VGA
BOOT
It is normal for the DRAM status LED to blink during memory training. This indi
cates the system is working properly.
Tutorial Video
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