Computer does not start after installing a new graphics card

I am owner of a HP Pavilion H8-1020 with a processor intel i7 - 2600 s Windows 7 and am trying to upgrade my Radeon hd 6570 to a Gigabyte AMD Radeon R9 280 OC. I improved my diet for a Corsair CX750 to meet the requirements of power and installed with number. After the installation of the new card, which as far as I can tell is well seated in the pci slot and correctly connected to the PSU, my computer does not start.

System powers on, all fans of begin to run including the fans on the new graphics card, but it does not begin the boot process, no entry is received at my monitors, no light on the keyboard, my OS starts loading, I can turn off the system without the delay that will flow normally. Then I reinstalled my old graphics card and the computer started as usual.

Now, assuming that the card is not DOA, which unfourtunatly I have no way to verify, and I'd like to see if it could be another problem before going through the process of restitution. I did some reading on the internet, which helped, but did not help for a technological neophyte like me.  Now, I know a few things that could cause this problem but lack the necessary skills to determine what question is making me. What I've read, these could be possible questions:

1: my new graphics card is not compatible with my motherboard. It's something I know now that I should have checked before buying and something I should theoretically be able to do it now, but I am at a loss on how to do it. My card is compatible with my motherboard?

2 could be a BIOS problem. I updated my bios driver with the version provided by the HP site. I am running FRIEND 7.16 05/10/2011.  And from what I've read it might have something to do with my bios to UEFI mode and I would need to go to a legacy mode so he can recognize a new device, is it true? I am extremely wary of messing with my BIOS settings for fear of bricking my system. How can I check my current BIOS settings are and what I should change and how would approach I change them? Will one of these changes affect my system if they are not what is not causing the problem?

In addition to these issues, anyone know any other matter which may be the cause of the problem that I should look for? Thanks for any help.

Hello @Eric_Z,

I can see why you are having problems with your new graphics card, and to get to the fast response that your motherboard is not compatible with the new graphics card that you have purchased. And here's why.

Your motherboard according to the page HP Pavilion HPE h8-1020 Desktop PC product specifications is the Carmel motherboard, which has the following expansion slots:

  • A PCI Express x 16
  • Three PCI Express x 1 connectors
  • A PCI Express Mini Card x 1

As there is no version indicated for your PCI Express x 16 it slot means that it is version 1.

Now, your previous graphics card was a PCI Express 2.1 x 16, which means that it was version 2 and compatible with your PCI Express x 16 slot on your motherboard. However, the new card is PCI Express 3.0 and will not work in your motherboard due to a compatibility break. While the technology is supposed to be compatible there are many cases where it is not, and I'm afraid that you meet one of these cases.

I am offering an overclock.net article entitled: the final answer to the controversial compatibility of PCIe x 16 version. where your situation has been tested and examined.

I hope this helps. Have a great day and thank you for display on the HP Forums!

Tags: HP Desktops

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