Direct Link: https://youtu.be/hCR9bGR3mPY
I Install a new Kingston 120GB SSD,
A New NVidia GTX 750 Ti Low Profile Graphics Card,
And Replacing the Power Supply with a new 500w Power Supply.
Links to Where I got the Items:
Gigabyte GeForce GTX 750Ti Graphics Card: [UK] | [US N/A]
-Alternative GPU: Gigabyte GeForce GTX 1050: [UK] | [US]
Kingston SSDNow UV400 Solid State Drive: [UK] | [US]
PS500TFX 500w Power Supply TFX: [UK] | [US N/A]
24 to 14 pin connector: [UK] | [US]
Molex to SATA Power Adaptors: [UK] | [US]
If the 500W PSU isn't available a 400-500w similar PSU should be ok.
eBay: [UK] | [US]