My RB750 is not show in network interface

Hi everyone .
I have an old router board 750 and I wanted to configure it for the home network, but when I connect it to Windows from any of its ports, inside Winbox And Netinstall It does not show it Even inside the Windows network section, it does not show any active devices But when I turn on the device in reset mode, as long as I hold the reset button, the device appears on the network, but it does not appear in the programs, and after a few seconds, the device resets again.
My firewall and antivirus are also turned off.
I don’t know what to do anymore. Thank you for your help .
Thank you Parsa Lakzian

If it resets after a short time, it’s likely some of the capacitors have bulged and gone bad.

No, it does not reset after a while in normal mode, but when it turns on, for example, the LAN cable is connected to port 2 and the port 2 light is on, if you pull the LAN cable, the light stays on.

There is no one who can help me because I am really confused myself