Upgraded PC

Unstable electricity at my home was causing my beloved PC to give up. The power supply, processor (Core2Duo), and motherboard were damaged. I have to upgraded all the damaged components. Currently I am using Core i3 5300 Processor, MSI Motherboard type H55-E33., 400 watts PSU,  2 GB DDR3 RAM, and integrated video card (which is capable of HD playback). Hard drives, DVD Writer drive, and case are still from the old one. This accident also gave me a chance to upgrade Windows XP Pro SP3 to Windows 7 Pro. So far it is running beautifully, although it is a bit louder than the old components.