I had bought a GA B75M D3V Rev2 Gigabyte motherboard, Dual core CPU G2030, Zion 4Gb RAM and zebronics 450W power supply and upgraded my desktop PC. I had a 80 gb sata HDD. This was a year back. Recently one day the PC did not start. So I opened the cover, checked the power supply, pulled out all cables from MB and connected all the cables and after assuring my self that all is well and Ok , I switched on the power. I heard a sputtering noise followed by burnt smell. I could feel that the MB is burnt. I took it to the retailer . There he declared that the MB is faulty and is to be sent for repairs. After two weeks he called me and told that the Processor is also faulty and requires repairs/replacement. So I requested him to check the RAM also and if, necessary send that also for repair. Now I am waiting for the complete set to come back. To my dismay I found out that the HDD is also dead. I am left only with the cabinet, keyboard and mouse. So my question is what burnt my MB completely?