Graphics card no output

[ColorPast]

I recently replaced my power supply and graphics card, I now have a
Sapphire AMD R9 290 TRI-X OC graphics card and a Corsair 750 watt power supply.
The power supply works as expected but the graphics card does not display anything at all.
All I get is "No signal" on my monitor, HDMI and DVI. My old Nvidia Geforce GT 705 works even without drivers.

I know what you're gonna ask, have I installed the drivers. No I have not and heres why, when I goto the AMD website and download the drivers it just installs AMD Catalyst Install Manager,
and I think you get the drivers from AMD Catalyst Control Center (which it has not installed).
I have Windows 8.1 and I don't see an application to launch the install manager.

I tried installing AMD drivers on a virtual machine (running Windows 7) to see if there would be a application to launch, but the operating system crashed with a blue screen.

When I put the graphics card in (obviously with the wires connected to it) the fans on the graphics card spin but like I said, not displaying anything.

I'm wondering if the problem is the motherboard because the motherboard is a
Hewlett-Packard 2AF7 which I suppose is not meant for the graphics card of this tier.

In the graphics card there are two 6 pin PCI and one 2 pin cables into the graphics card, I hope thats the right ones.

Also no one else has been able to help me, maybe no one knows or I'm just not getting noticed.

 

[Khaleal]

Best option is testing the card with another system that works.. It'll save your time.
I had a similar situation when I upgraded to HD 7750 with my 2008 motherboard (It was Intel 945 bla bla) and there was no video output.. I was about to RMA the card (After spending many hours trying to fix things and searching for BIOS updates) but when I tried it with another system it worked flawlessly.

 

[ColorPast]

I don't have another system to test it out on, and my computer works with integrated graphics but only when the graphics card is not powered.

 

[Khaleal]

Give motherboard BIOS update a try..
Don't you have family/friends with PCs?

 

[ColorPast]

No they all have laptops, and how do I update the BIOS? My computer is new by the way, HP Pavilion 500 PC Series.

 

[ColorPast]

If I buy this motherboard can I use any graphics card with it? I want to use my Sapphire AMD R9 290 TRI-X OC with it.

http://www.amazon.co.uk/Gigabyte-GA-AM1M-S2H-Motherboard-GIGABYTE-Technology/dp/B00JFOFJT4/ref=sr_1_4?ie=UTF8&qid=1420642034&sr=8-4&keywords=motherboard