Another noob replacing his GPU

[knight.96]

Long story short: my old HP pc’s gpu is burning down (high temp etc)

Managed to find the same GPU model, replaced the old one but the new one doesn’t work at all

First, the PC emits 7 loud beeps (this issue was solved by setting the PC bios to legacy mode) and then I get no video signal and the GPU’ fan goes at 100% power (which would be fine in summer to cool myself a bit though)

This is my pc: https://support.hp.com/za-en/product/hp-pavilion-500-200-desktop-pc-series/5399647/document/c04089653/

Which mounts a Nvidia GT640

This is the Asus GPU (same model, as I said) I’m trying to instal
https://www.asus.com/Graphics-Cards/GT6402GD3/

Note:
* as stated, I switched the bios to legacy mode and now I don’t get the loud beeps anymore
* I have no other PCs to use for tests
* I don’t have an integrated Graphic Card so I can’t uninstall the current one to see what happens
* the old GPU works fine (sort of, of course) if I try to mount it back

 

[Cioby]

Why would you replace your old GPU with the same model? That is hardly an upgrade and you probably paid too much for it. You could've just cleaned up your old GPU and change its thermal paste.

Also you have a 4770 and PCI-E 3.0 if you wanted to, you could just get a 750ti or higher. Hell you can even get a 970 or higher. Mostly anything should work on your pc.

Besides that, did you plug it in properly? So it doesn't move even without the screws in place? Did you plug the PCI-E cable from your psu to power it?

 

[knight.96]

Why would you replace your old GPU with the same model? That is hardly an upgrade and you probably paid too much for it. You could've just cleaned up your old GPU and change its thermal paste.

Also you have a 4770 and PCI-E 3.0 if you wanted to, you could just get a 750ti or higher. Hell you can even get a 970 or higher. Mostly anything should work on your pc.

Besides that, did you plug it in properly? So it doesn't move even without the screws in place? Did you plug the PCI-E cable from your psu to power it?

I got this card from an old friend for 40 Euros, and I couldn't get a better one because I have basically no money right now and I would've had to change the PSU as well
I only wanted my PC to run as it did before, without sounding like a Boeing 747

Anyway, I'm pretty sure it's plugged in fine, I think that if I pressed harder I would just crush the mobo.
On the whole "PSU cable" I'm pretty lost: the old gpu would just get into the PCI-E slot and run, same as this one: there is no slot for a cable here

 

[Cioby]

Oh, my mistake, the 640 is smaller than I thought. There is no extra cable. Do you have any thermal paste? You could just fix the old GPU or even use the new fan + paste on the old GPU since that one works. There is no reason your new GPU wouldn't work since it's the same model, if it works on his PC

 

[knight.96]

Oh, my mistake, the 640 is smaller than I thought. There is no extra cable. Do you have any thermal paste? You could just fix the old GPU or even use the new fan + paste on the old GPU since that one works. There is no reason your new GPU wouldn't work since it's the same model, if it works on his PC

Wouldn't help much: first of all, my GPU is old and has been used extensively (to say the least), so even assuming that changing the thermal paste could reduce the temperature by 40 degrees, it wouldn't last too long.
Second, since it's just a matter of months even by frankensteining my GPU before it dies, I'd be back to square one the moment I have to replace it.

I've done further research: the new Asus GPU is not UEFI ready (so I think that's why switching to Legacy mode stopped the initial beeping. Could this still affect the installation process?

 

[Cioby]

If Windows is installed in UEFI mode (motherboard and graphics card/iGPU must be UEFI) and you try to add a non-UEFI graphics card it probably won't boot. You have to reinstall Windows to change from UEFI to Legacy or vice versa you can't just change that in the BIOS.

There's no issue installing Windows but if the motherboard AND graphics card aren't UEFI compatible it will install in Legacy mode.

I'll repeat, the main compatibility issue is if you install Windows in UEFI mode (which you might do with just a CPU and integrated GPU that is UEFI) then shut down and switch to a non-UEFI card it likely won't boot.

(It's also hard to tell if you're actually in UEFI mode. The C-drive would be GPT format, not MBR.)

So you'd need to change your partition type also, there are command prompt commands to do so, when I have access to windows I just use my easeus partition master, otherwise just google for the cmd commands to change partition type before reinstalling and formatting. It's not that complicated