Gaming PC cut out, doesn't turn on again - LFC#327

My friend's computer died and wouldn't turn back on. Fairly simple problem, here's how I go about sorting it and tidying it up while it's in bits. Check out Adamant IT 2 for the Pod Cast and More:    / adamantit2   Join the Discord right here:   / discord   Support the channel directly at:   / adamantit   Follow us on Twitter at:   / adamantit   Check out our Instagram at:   / adamant.it   Chapters: 00:00 - Intro 01:10 - Checking the PSU 08:40 - Disassembly, PSU inspection 14:00 - Cleaning and Thermal Paste 17:15 - RTC Battery and More Cleaning 22:52 - New PSU 29:28 - Testing and checking UEFI config