Colored screen while installing windows 10

Earsistemas

Hi everyone,
I am trying to install windows 10 in my new UP CORE. I have followed all the instructions I have found in the community: created the bootable windows 10 USB drive from microsoft side, connected it to the usb port, powered the board, HDMI cable, UP logo on screen, some seconds (the usb drive flashes) and... color screen (sometimes red, other green, or blue, or yellow....) I suppose the problem is the video driver, but I can´t install it before the windows instalation. I have tried different pen drives, made them with different software (microsoft side, rufus)...FAT32, MBR....always the same: different colored screens.
Please, any help would be wellcome.
Thanks