These flash when there is active communication on the PCI bus. 3. Common POST Codes POST Diagnostic Card
Newer combo cards may use Mini PCI , Mini PCI-E , or an LPC header connection.
Before installing, ensure the computer is powered off and you are properly grounded.
when it comes to diagnosing. and repairing old computers. there are a number of standard tools that should be in anyone's arsenal. YouTube·Majenko Technologies PCI POST PC System Diagnostics Test Card - StarTech.com
These should remain lit constantly. If an LED is dark, it suggests a power supply failure or a short circuit on the motherboard.
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