mac startup issues, unusual alarm like sound, anyone familiar with it?
have an old macbook pro. since this morning i had trouble with turning it on as it was stuck on a black background.
gave it a SMC reboot and NVRAM reboot as suggested on forums i found. got rid of the black background and made it restart but there is another problem now, it makes this repeated sound at startup: https://imgur.com/a/U8TPl8x (please check video with sound here)
any advice/idea what it might be and what i can do about it?
Mac Pro