Question
What happens when all four red LEDs stay on and no video on boards such as P4DC6+II, X5DP6, X5DPR...?
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Answer
If all four LEDs are on meaning that either system cannot recognize CPU, the CPU is bad or there isn't enough power supplied into the CPU. Please check the following: (a) Make sure CPUs are properly seated (b) Make sure CPU is good (c) Make sure 8-pin 12V power connector is properly connected.
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