Negative equity

I had a mobo and apu from Art's computer that I was supposed to put on eBay. And then I thought no, I'll make another computer because my laptop is crap for editing video... And so you save and spend. Still waiting for case and screen so I plugged all together on the coffee table and used the tv as a screen.
Windows used to cost a bomb. Now you just download it onto a usb stick and pay a tenner on eBay for a product code.