Graphics card and power supply conflict, need help?

[The_Raging_Shepard]

hp pro 3400 mt series
windows 7 pro

2GB ram (plan to upgrade to 16GB)
pentium cpu (plan to upgrade to core I7)

Brand new PSU = Corsair 650w CS650M
Brand new GPU = MSI Geforce 1050TI gaming x (Nvidia) minimum power needed 300w

Ok so heres the thing... i have bought the above peripherals and while on its own the new power supply seems to work perfectly fine as i am using it as i type to you now, it doesn't when i have the graphics card plugged in.

now i am a first time pc builder hence starting with a bog standard pc so i don't have all the answers here, all i can say is as soon as you boot up the tower with the graphics card attatched, the tower makes several beeping sounds (as like warning you i guess) and the graphics card lights briefly flicker once then stay on constant. as for the fans on the graphics card they start up for a short period of time and then shut down. after which nothing else happens, the system doesn't start up or anything it just sits there.

Now obviously being tech minded by nature ive come up with 2 possible reasons as to why this is but no way to test them.

1, the gpu is faulty in which case no problem just get it replaced.

2, the pci e x16 slot is broken in which case its gonna hurt my wallet.

i have been running a third theory around in my head however, could it be possible that the power supply (even though running the pc perfectly fine minus gpu) could be faulty?

 

[dontlistentome]

The newer Nvidia cards, like the 1050 Ti, can have trouble working with the older style legacy bios. So check to see if your motherboard has a UEFI bios or not. That is likely to be your issue. It could be the PSU but that's a very low power demanding card, unless the PSU really has issues it should be able to at least get to your desktop, that's why I doubt it's the PSU.

 

[The_Raging_Shepard]

The newer Nvidia cards, like the 1050 Ti, can have trouble working with the older style legacy bios. So check to see if your motherboard has a UEFI bios or not. That is likely to be your issue. It could be the PSU but that's a very low power demanding card, unless the PSU really has issues it should be able to at least get to your desktop, that's why I doubt it's the PSU.

And If it does have UEFI bios what do I do please?

And if it doesn't same question?