Screen not turning on when installing rig.

[Pixelhouse]

Ok so it's been years since i've put toghether a pc, so i'm sure i did something wrong but can't figure out what, everything looks in place and runs, but i cannot seem to get my screen out of idle mode when i turn it on.

Cpu is installed, heatsink fan turns, videocard fan turns, Harddisk runs, and ram is installed.
Could anyone see the problem or error i made when installing?

I'll add some pictures perhaps it shows.
https://i.imgur.com/wvB4N6jl.jpg
https://i.imgur.com/8YUGanUl.jpg
https://i.imgur.com/LqNkfICl.jpg
https://i.imgur.com/hcyIvKEl.jpg

https://i.imgur.com/eBfNIAbl.jpg
Tried with one and also didn't turn on the screen, only spins the fans if i atleast put one on the right side.

https://i.imgur.com/Pd9QwK7l.jpg
The top left corner is for my HD, the 2 next to it are for my botherboards main power,
The bottom left is for my CPU(ATX12v1), and the one next to it is for my GPU.

I hope someone can spot what i did wrong..

Thanks in advance.

Setup:
AMD Sempron
ASRock 970 Extreme 4
club 3D R9 280x RoyalQueen.

[ineedit]

If you do not have another video card to try then add a speaker and listen for beep codes.

[Pixelhouse]

If you do not have another video card to try then add a speaker and listen for beep codes.

I do have another videocard and same thing happend. I do not have a motherboard speaker however.

[ineedit]

If you do not have another video card to try then add a speaker and listen for beep codes.

I do have another videocard and same thing happend. I do not have a motherboard speaker however.

That motherboard also has a digital LED display, after you have powered it up what code does the LED show?

[Pixelhouse]

If you do not have another video card to try then add a speaker and listen for beep codes.

I do have another videocard and same thing happend. I do not have a motherboard speaker however.

That motherboard also has a digital LED display, after you have powered it up what code does the LED show?

I found the solution the LED said 6d wich meant it had to do with my GPU not being recognised, after long search i found out i was missing a (dont know the name in English) blue connector wich connects 2pins on the motherboard.
After i used one from my old motherboard and put it in place it recognised my GPU.

Thanks though ineedit!

[ineedit]

If you do not have another video card to try then add a speaker and listen for beep codes.

I do have another videocard and same thing happend. I do not have a motherboard speaker however.

That motherboard also has a digital LED display, after you have powered it up what code does the LED show?

I found the solution the LED said 6d wich meant it had to do with my GPU not being recognised, after long search i found out i was missing a (dont know the name in English) blue connector wich connects 2pins on the motherboard.
After i used one from my old motherboard and put it in place it recognised my GPU.

Thanks though ineedit!

No worries, happy mining!