Greetings and welcome to the ASUS ROG Forum,
The VGA LED flashing indicates as you already may of guessed is a possible problem with the graphics card. Here are a few things to check:
1) are all of the power connectors on the graphics card populated?
2) while not required for single graphic card use it may be worth while to run power to the EZPLUG "Molex" connector located near the top PCIe Slot
3) try plugging the graphics card into another PCIe slot
4) did you connect video cable from the monitor to another video connector on the graphics card
It is very helpful if you would post the specs from your system too
🙂
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For trouble-shooting tips see my blog at:
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http://thenerdbench.blogspot.com/p/bench-testing.html
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MB: Crosshair V Formula-Z • CPU: FX-8350 • GPU: Asus Matrix R9 280x • RAM: 8GB of Crucial Ballistix Tactical Tracer (1866)• PSU: Thermaltake DPS Thoughpower 750 Watt • CPU Cooler: Thermaltake Frio Advanced • Keyboard: TT Sports Challanger Ultimate • Mouse: TT Sports Black Element • Case: Thermaltake GT Level 10
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