MY PSU blew up, there was a popping noise and it smelt like smoke and afterwards my computer wouldn't turn on. So today i bought a new PSU and Im not sure if i connected everything properly but my computer turns on but the screen shows a weird rainbow pattern.I connected the main power connector, the +12V connector(4 pin) and the peripheral connectors. There are alot of extra cords that has no place to connect such as the serial ATA power connector and the PCI express connector (6 pin).