Hello, I am trying to power up my r7265 gpu on a Hp z230 SFF. I have connected the gpu to external psu of 750 watt. But when i try to turn on the pc it gives 4 beeps and red led flashes on the power button 4 time. Then after a pause it repeats. Any solution to this problem?
It might be a timing issue. You need to turn on the external psu first and only then you turn on the pc. How are you turning on the external psu? Paper clip mod?