Hi, I'm from the UK and made the mistake by rushing and buying a PC instead of researching what it could do and it also came with marks on the window from the CPU screws so I'm returning it. I'm hoping for a refund in the next week or so and thought I'd ask on a online forum for advice on either how to build or buy a gaming PC. I have roughly £700-£800 to spend on a pc, I have an old monitor I could use in the mean time and I have a mouse so I would just need to buy a keyboard.