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No Video Output - FM2-A75MA-P33 & AMD A6-6400K X2

Hi everyone,

I built a PC with MSI FM2-A75MA-P33 motherboard and AMD A6-6400K X2 CPU, without a discrete GPU.

When I first turned it on, there was no video output, so I assumed I had to updated the BIOS to support the new CPU. I borrowed a GPU, put it on, BIOS updated fine to the latest version, but after removing the GPU there was still no output from either the DVI or VGA ports on the motherboard.

I put the GPU back in, checked that the BIOS correctly displays the CPU as "A6-6400K APU with Radeon™ HD 8470D" in CPU settings and at the top of the screen too, but in the "Integrated Peripherals" sections under graphics it doesn't allow me to change the graphics mode from PEG. The menu is grayed out.

What else can I try to fix it? What could be at fault? What other information do I need to provide?

Thanks in advance!
7 answers Last reply Best Answer
More about video output fm2 a75ma p33 amd 6400k
  1. Hi, The back video port is DVI-D. What port using for connecting the monitor?
    Try a different VGA cable if using the VGA port.
  2. alexoiu said:
    Hi, The back video port is DVI-D. What port using for connecting the monitor?
    Try a different VGA cable if using the VGA port.


    I've tried both the DVI-D and the VGA port, the cable works fine on another PC.
  3. DVI-D to VGA would not work, that's why I asked.
    Try clearing the CMOS (unplug the power cord and remove the CMOS battery for few minutes). Use only the VGA cable.
    If still the same. it's either a CPU or a board issue. I would RMA them both.
  4. alexoiu said:
    DVI-D to VGA would not work, that's why I asked.
    Try clearing the CMOS (unplug the power cord and remove the CMOS battery for few minutes). Use only the VGA cable.
    If still the same. it's either a CPU or a board issue. I would RMA them both.



    Tried clearing CMOS, no difference.

    Any idea why it works fine when an external GPU is in there? It even boots to DOS from USB (used it to flash the bios).

    Without the GPU, the CPU fans spin up, spin for a while and then sin slower/stop. Also when RAM is removed, it doesn't beep (it should beep, I think).
  5. Best answer
    I would RMA/erturn both board and CPU, if possible.
  6. alexoiu said:
    I would RMA/erturn both board and CPU, if possible.


    Okay, thanks for the help. I need to PC to be working by Saturday, but I guess it won't happen. Maybe I should get an external GPU and go with that. Till that, let's see if anyone else has had a similar experience.
  7. Turns out it was the RAM. Memtest showed it had a lot of errors. Bought new RAM and it works now.

    Thank you for the help.
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