From the office I could take four old workstations with me. These are the HP Z400 workstations.
I have expanded the largest RAM sticks out of three workstations, then packed them all into one.
Windows packed onto a SSD and boom, I had a great computer.
Now I wanted to install a stronger GPU, a RX 580. but this requires more electricity. an 8-pin connector and no 6-pin, as with the HP power supply.
That's why I bought a new ATX power supply.
But after I realized that the pinout is different at HP (for reasons I do not want to understand), I had to tinker the whole thing.
Now I get instead of 4 "Beeps" Diagnostic LED Codes, 5 "Beeps".
According to the website, https://support.hp.com/us-en/document/c03599666, I have to check the RAM.
After I have tried out all the combinations, everything except for one stick, two sticks, another line of the Rhine. I doesn't start.
Can someone help me there?