820-2915-a no image dead gpu

[lincev]

Hello, I have a problem with this board. The computer starts up and moves the fans. The chime is heard but it does not show an image, even with an external monitor.

Can I remove R8904/11 to dead the gpu amd and try to boot with the intel?

thx so much

 

[2informaticos]

Not sufficient.
You can disable GPU in BIOS, with Medusa.
In such case, set EFI password, to prevent NVRAM reset

Is better to flash the GMUX.
This option is not affected by NVRAM reset.

 

[lincev]

can I used HW-USBN-2A?

 

[2informaticos]

What's that?

 

[lincev]

i have tool for pogrammer bios of lattice FPGA (with soldering on board)

 

[2informaticos]

Flashing GMUX through JTAG is the fastest way.
Not even need to remove the MLB from chassis.
However, backlight keys will not work; unless you do supplementary trick.

 

[lincev]

yes I know page of doslabelectronics and there sell license for demux flasher and tool HW-USBN-2A ICSP FPGA Programmer.

or u know other tutorial?

 

[lincev]

too I have flex 6 pines 1,27mm for no-soldering

 

[2informaticos]

You don't need any license.
Jed file needed is already posted on the forum...