Firstly I'm not sure is this the right place to ask so please tell me if not.
I'm a 16 year old male and I need some help with talking about money and borrowing with my parents.
The Context:
Almost a month ago my desktop PC's PSU broke. The PC in question is about four years old and was a prebuilt system, from Fujitsu if I remember correctly. Obviously that means that the PC is no longer working and I have been using my phone and tablet to do things. I would buy new parts for it but problem is that I'm too shy to ask my parents for the parts I'd need. I think my dad is the first person who comes in my mind to ask first.
Other Issues:
I'd like to build a PC and I've considered using newer parts but my dad is a bit of a 'cheapskate' in so much that he thinks "why would you need a powerful computer, you don't do anywhere near that kind of work".
That makes me freak the hell out as I need a working computer for school and I like to play games on computer, as I like to build DIY things (from OTG cable to computer case). I don't want to keep borrowing my brother's laptop as it's really not very good and doesn't do the things I need it to. The main thing is that I'm too shy to ask for anything from my parents.
The Question:
I need some advice on how I should approach my dad about getting parts to build a computer. Keeping in mind the need to defend some of my part choices with them being newer and potentially more expensive than the basic components.
** Thank you so much peoples who have answered to this!!!** I will figure my situation out. For sure i will earn the money by myself for things.