pcie detected sometimes

In my z800 I'm trying to add an pcie SATA controler JMicronJMB363 card. It have an eSATA port that I need. Sometimes I this card is detected in the boot and I can use it in my Debian OS.

However, most of times that pcie card is not detected when workstation boots and I can't use it in my Debian OS.

The card was removed from a fully working system and I've test it in another PC (not HP) and it works perfectly.

There is somebody with similar issue? Can anyone help me with this problem?

I've cleaned the card connectors, changed the pcie slot on the motherboard, etc, but it just works a few times.

It seems a random behavior.

Thanks in advance