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Hello all i have problème with my r9 390 sapphire nitro. Can you help me? I have Black screen and no boot. I have tested all Voltage and i have no Voltage to vmem. And two capacitor. After other test i connect power supply 2 mosfet 4c10n have 12v And 2 mosfet 4c10n 0v fuse 0v capacitor 0v see...