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Z220 not booting after installing network card(s), 5 Beeps and red power button blinking)

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HP Z220

Hi, i tried to install network cards to testlab desktop which serves as virtual server. I have two quad port NICs(see details below) but neither of them works. As i insert these to the mainboard and attempt to boot, HPZ220 just starts beeping 5 times and fails to boot.  Also powerbutton blinks read. Manual says following:

"Red Power LED blinks five times, once every second, followed by a two-second pause. Fivebeeps.
->Pre-video memory error."


Network cards i've tried are: 






Both are x4 PCI Express and should be compatible with x4, x8, and x16 PCI slots in Z220? 


I've lates bios installed in Z220.

br, JMM

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I've searched for internet for possible solutions but did not yet find anything helpful. One thing i found was that there were hints that some pcie slots would be reserved for certain cards? Why is this so?


5 beeps hint to a problem with display adapter. Is my Z220 expecting my NICs to be display adapters!? 


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