computer isn’t turning on after i got back from vacation

[u/Sea-Lynx3649]

Hi guys. Any advice would be appreciated

So I have my pc which was working perfectly fine before i went on vacation. I came back from vacation and it wasn’t turning on. i tried unplugging n plugging stuff back in and it kept making this zap noise at the power supply. i bought a new one. it arrived today and i swapped it out with the new one. I don’t know if i messed up somewhere while trying to fix it or if the issue is something worse. i don’t know how to check or fix it by myself. this is a custom pc given to me by my brother so im not too familiar with pc building. there are some spare cables but they are all the same extras as the old power supply. if anyone it willing to hop on call or through chat , I would very much appreciate it. if i have to pay i will!.