Edge 13 (U5600) unable to press ctrl + alt + up arrow

[Michalxo]

Hello!

I have U5600 edge 13,3" brand new laptop. I am unable to press this combination. Seems like sometimes the left CTRL key is not getting correct signal. I am able to make this combination with ALTGR + (r)CTRL or (l) ALT + (r) CTRL. I switch FN <> CTRL buttons in bios. May this be the problem? (I'll try out soon to change fn - ctrl back)

Thank you in advance
Mich