Since Windows 8 Microsoft decided that there was no need for software capable of playing DVDs strait out of the box. Instead you have to pay for the luxury. If you qualified for the free version then lucky you. For most of us we'll be stuck buying Windows DVD player from the Microsoft Store for £11.59. I'm here to tell you that there is an alternative, VLC Media Player.
Extreme Power Supply Calculator, developed and supported by Outer Vision, is the best on the web and has everything you would need to determine what size power supply is needed for your PC. Although it's not an exact science, as many things can influence power consumption it still gives you somewhere to start....