NVIDIA GeForce GT 730 compatibility with MSI neo v3 k9n motherboard?

Hey everyone!
I’ve been tinkering with an old desktop I’ve had since about 2008—it’s definitely a vintage setup at this point—and I decided to pick up a budget graphics card just to give it some life. My main goal was simply finding something with an HDMI port so I could hook it up to my TV for some casual viewing.
I did my homework beforehand, asking around about compatibility, and I was told with that classic "99% certainty" that everything should plug right in and work perfectly fine. But, as luck would have it, reality had other plans...
Every time I try to boot the system, the motherboard hits me with those eight dreaded beeps, signaling that the video card isn't being detected—which, unfortunately, is exactly what's happening.
I'm feeling a bit stuck on whether there's some hidden setting in the BIOS I need to tweak first. I even went as far as stripping out all the old drivers from my previous card before swapping in the new one, but nothing seems to budge.
Does anyone happen to know a trick or a workaround for this? I'd really love to avoid being stuck with a piece of hardware I can't use, especially since I won't be able to return it to the store.🤦

So, the motherboard actually has a PCIe x16 slot—I honestly thought it would have an AGP slot since it's such an old setup. Anyway, does the NVIDIA GeForce GT 730 look like it's seated properly in the slot? You might also want to try a CMOS reset; just pop that little battery out of the motherboard for maybe 30 seconds or so, then put it back in. After that, fire up the PC and see if anything changes..

On older motherboards, 30 seconds isn't going to cut it. Every time I do this, I leave it running way longer—at least 15 to 20 minutes just to be safe.

Check which BIOS version you're running on the board; if there's a newer one available, try updating it. If you're already on the latest version, you're likely out of luck. Even though modern GPUs are technically backward compatible with old PCIe slots, the chipset still has to play ball, and those nForce chipsets are notorious for being stubborn as hell...

You could always hunt down a decent used motherboard somewhere 😬 but stay far away from anything with an nForce chipset... And how much of a headache is a macOS reinstall going to be for you? If you go that route, backing up all your data is an absolute "must."

Thanks so much to everyone for all the help and advice... I'm going to give this a shot and see how it goes...