Post issue on Biostar A88ZN

[CNY RMB]

Hi,

 

I currently am trying to figure out why the motherboard shows the post screen and goes to bios with a gpu installed, but will not when using the integrated graphics. I have attempted to reset the bios (in software), reset the cmos (using the jumper) and also removed the cmos battery. The system was working fine as a HTPC/NAS with a GPU (HD 7770) installed for the last 6 months and has only shown this problem after removing the gpu. When starting the machine without a gpu the screen shows an input, but no actual display. I also attempted to have it boot into Linux and access it via the network, but it does not seem to properly boot without the GPU, as it does not show up on the network. Also what is very weird is that the switch shows a 100M connection while the led on the motherboard LAN port displays a 1000M connection.

 

Motherboard: Biostar HiFi A88ZN

CPU: AMD A8-7650K

GPU: HD 7770

RAM: 8GB Kingston 1600 DDR3

PSU: Seasonic 520W