Question Pc beeps once after gpu installation but no display

[BinnyTurbinny]

After I installed an old Radeon hd 7790 to my pc and turn it on I get a single beep which I think is the way it says that it posted and all fans start spinning normally, but I get no signal on the monitor. My first try was with a dvi-a(connected to the gpu) to vga(connected to the monitor) cable and I got the beep with no image.
I thought that the dvi-i port on the gpu might be bad so I tried again with a hdmi cable but the problem persisted.I tried clearing the cmos as well with no result.
There is no problem with the rest of the system because it works just fine when I use my gt 730.

Edit: also tried having both of the cards in thr system at the same time, connecting the cable to the 730. Gpu z identified the card as an radeon 7700 series gpu with no more info. I then tried unistalling the gt730 driver and install the radeon one but system crashed both times I tried. Hope someone can help

Specs:ryzen 5 2600
Asus prime b350-plus
2x4gb corsair vengeance lpx 3000mhz
EVGA 600 BQ 80+ bronze psu
1 tb seagate barracuda old hdd

 

[Phillip Corcoran]

Have you connected the PSU auxiliary power cable to the HD 7790 (usually a single 6-pin cable for the 7790 I believe)?

(Your old GT 730 doesn't require any additional power so that might explain why it works but the 7790 doesn't)

 

[BinnyTurbinny]

Have you connected the PSU auxiliary power cable to the HD 7790 (usually a single 6-pin cable for the 7790 I believe)?

(Your old GT 730 doesn't require any additional power so that might explain why it works but the 7790 doesn't)

Yes I have. The PSU is also in good condition, only used for about a year and a half. I also forgot to mention that every fan starts spinning up normally, as if it was booting up.