I installed my motherboard in a new case yesterday and at the first boot to windows everything worked perfectly. Now when I put my PCcase vertically my videocard does not get recognized, although the fans are spinning and my system boots to Windows normally. When checking the systemmanager the card is not displayed. The wierd thing is when I put the case horizontally this issue does not happen and my PC boots normally with the videocard working as normal. Can this be due to a faulty pci-e slot? Or can it be somethin else that I have overlooked?