ok so I am running an amd x4 965 with a gigabyte ga-78lmt-s2p. I bought a new hard drive video card and more memory. I had issues with the pc fainting after i cloned the hard drive onto the new one. I did some research found out I needed a new power supply to support my system. I purchased 600 watts one. I installed it. It wont send a signal to my monitor. my brother took my video cards and tried them. They worked on his pc. The on mother board video did not work either. Is my board done for? What would you suggest for replacements? Thank you guys so much