Any idea why this is happening? The card does turn on and the fans are spinning even without psu connections (so pci-e should be working I presume). The cards LEDs for a short moment flash up with blueish color and then pulsate red for as long as they are turned on. The post code (1 long 2 short) is output and basically nothing happens.
The only thing I can note is that I currently cannot attach my monitor to it, since it has a dvi-d port instead of dvi-i or d-sub (another problem, that I will have to deal with too >.> ), however the 560 GTX did not output the post signal and the PC turned on just fine without my monitor being connected to it, so there probably is something iffy going on.
Any help is appreciated.
EDIT: I am using a MSI P35-A75MA motherboard.
EDIT 2: On user to user FAQ I did find, that 1 long 2 short beeps does relate to the VGA (1 long 2 short - Monitor or display card error). Link: https://forum-en.msi.com/faq/article/bios-beep-codes
Seeing this, my main question I guess is if the POST could be occuring, because there is no monitor connected to the video card, or is it just broken?
EDIT 3: Ordered a HDMI to VGA adapter, so I can connect my monitor to it. Gonna arrive on Friday (supposedly).
EDIT 4: I did notice, that I am booting into Legacy mode (according to msinfo). Could that have something to do with the GPU not working? I also couldn't find any explicit switch between UEFI and Legacy in my BIOS menu (accessed by pressing delete in my case).
EDIT 5: So, according to hwinfo64, I do have UEFI support, however the OS is booted in legacy mode. At least, the UEFI text next to my motherboard is green, while boot mode next to OS is shown as legacy Boot (and is grey). Could this cause the issue and how would you fix it?
The only thing I can note is that I currently cannot attach my monitor to it, since it has a dvi-d port instead of dvi-i or d-sub (another problem, that I will have to deal with too >.> ), however the 560 GTX did not output the post signal and the PC turned on just fine without my monitor being connected to it, so there probably is something iffy going on.
Any help is appreciated.

EDIT: I am using a MSI P35-A75MA motherboard.
EDIT 2: On user to user FAQ I did find, that 1 long 2 short beeps does relate to the VGA (1 long 2 short - Monitor or display card error). Link: https://forum-en.msi.com/faq/article/bios-beep-codes
Seeing this, my main question I guess is if the POST could be occuring, because there is no monitor connected to the video card, or is it just broken?
EDIT 3: Ordered a HDMI to VGA adapter, so I can connect my monitor to it. Gonna arrive on Friday (supposedly).
EDIT 4: I did notice, that I am booting into Legacy mode (according to msinfo). Could that have something to do with the GPU not working? I also couldn't find any explicit switch between UEFI and Legacy in my BIOS menu (accessed by pressing delete in my case).
EDIT 5: So, according to hwinfo64, I do have UEFI support, however the OS is booted in legacy mode. At least, the UEFI text next to my motherboard is green, while boot mode next to OS is shown as legacy Boot (and is grey). Could this cause the issue and how would you fix it?