Question PCI-e cards causing restart on boot on ASUS Prime B350-plus

[proninyaroslav]

I have a PC based on an ASUS Prime B350-plus motherboard (latest BIOS 6203) and a Ryzen 5 5600g. After installing any extension card (GPU/Wi-Fi/etc) in the any PCI-e slot, boot process behaves as follows: I turn on the PSU, the system and CPU fans spins, the RGB works, after a moment all the fans and RGB stop abruptly, then after a few seconds it starts again and the BIOS loads completely, making a bip sound. If I start the PC through a reboot or don't disconnect the PSU from the mains plugs, then there is no such problem. What could be the problem? I tried resetting CMOS, changing the battery, but it didn't help. PCI-e cards are OK.

 

[rgd1101]

brand and model of the psu?
what the gpu and wifi card?

 

[proninyaroslav]

Corsair CX750M, Wi-Fi Intel AX200. I currently use the built-in GPU, but a year ago it worked successfully with a discrete GPU (before Ryzen 5 5600g). This year I bought a Wi-Fi card and discovered this problem. I've tried other PCI-e expansion cards and slots (such as a video capture card and FireWire card) and they all create a similar problem. The cards are OK.
P.S: I also tried my older PSU from an old PC and the problem hasn't gone away.

 

[rgd1101]

modular psu? check the connection on the psu side? using the cable from the psu and not 3rd party cable?

 

[proninyaroslav]

modular psu?

Yes, but there is only modular SATA and PCI-e (I use only SATA). As I said earlier, I tried another PSU (not modular) and the problem persisted. This is also a fairly old Corsair PSU from 2017, which I haven't used for several years, but I don't have a newer one to test.