New Graphics Card Perhaps?

Check that secure boot is not enabled in the BIOS.

And enable legacy mode.

I'm out of the house at the moment but I'll be back in a few hours. Should I do that with my old graphics card in? I'll try what you've mentioned. Don't have the necessary cable to boot just using the integrated graphics. Regardless I've got integrated graphics usage turned off in the BIOS. Could It be the cards not compatible with the motherboard?
 
secure boot does seem to be the culprit, it should be compatible with your motherboard, any motherboard with a pcie slot should work with any gfx card!

Is there any way to bypass secure boot? I reset the BIOS to see whether it'd pick it up but no luck. Frustrating, but fingers crossed I'll get there eventually.
 
Yes you turn it off. its a option in the bios. You will need to disable it while the graphics card is unplugged and with onboard enabled.
 
Update: got the fan spinning so I guess that's a start. Still got a blue screen though. Disabled UEFI, and enabled legacy mode. Any more ideas. Thinking of turning on while using the integrated graphics and installing the drivers for my new card..
 
Sorry for a third successive post. Just went into system information, running through the integrated graphics, with the 750ti plugged in. Went into components --> Problem devices. The Nvidia Geforce 750ti showed up with the error code stating "This device cannot find enough free resources that it can use." Am I correct thinking my PSU isnt giving enough power?
 
so secure boot is now disabled? if your 545 can be powered by your psu the 750ti can, it uses half the power!

It's windows 7, in the BIOS I can't find secure boot. The BIOS on HP computers seems terrible as well.

EDIT: could it be compatibility with my screen. Silly question, but I just want to explore every possibility.
 
It's windows 7, in the BIOS I can't find secure boot. The BIOS on HP computers seems terrible as well.

EDIT: could it be compatibility with my screen. Silly question, but I just want to explore every possibility.

if you enable uefi and enter the uefi bios, can u see secure boot then? it seems secure boot is a uefi thing. Every card is compatible with every screen, unless you have like a 4k screen! I think the error your getting in device manager just means it cant access the card when your integrated gfx are plugged in.
 
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if you enable uefi and enter the uefi bios, can u see secure boot then? it seems secure boot is a uefi thing. Every card is compatible with every screen, unless you have like a 4k screen! I think the error your getting in device manager just means it cant access the card when your integrated gfx are plugged in.

I can't even get on to UEFI. It won't boot. Any other way to access it?
 
but you can boot with integrated gfx? re enable uefi from bios same way you disabled it, enter uefi bios, disable secure boot, reboot with new card. i know uefi is a win 8 thing primarily but im sure people were using uefi before win8 was released so u must be able to access it.
 
but you can boot with integrated gfx? re enable uefi from bios same way you disabled it, enter uefi bios, disable secure boot, reboot with new card. i know uefi is a win 8 thing primarily but im sure people were using uefi before win8 was released so u must be able to access it.

I've re enabled it, but when I startup again and go to use it it won't work. I click, and it just doesn't open anything. Frustrating. Is there another way to do it?
 
Think I've found the issue.
http://h30434.www3.hp.com/t5/Deskto...for-Pavilion-HPE-h8-1170d/td-p/3790038/page/3
If you read through the full thread the guy has the same model as mine with the same problem. He believes it's the fact it's a PCI 3.0 card and the system only supports 2.0. Because the systems over 3 years old HP aren't going to update the BIOS to support 3.0. Even though the card says it's backwards compatible. Apparently changing the card to a sapphire HD6670 worked. My question is whether a card of that quality is similar to the 750ti? Looks like I may be returning my 750ti and either exchanging for something else or making do with my old GT545.
 
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