I have a emachines C3070 with a k7mnf-64 mobo. The only new parts is an antec truepower trio 430W and a geforce 7600 gs. I was just using it and it suddenly shut off and had a loud beeping noise. When i opened the case i saw a red light between the cpu and the memory. I unplugged it and the noise and the red light stopped. I was able to turn it on again and use it and the red light did not come back on. So far it has happened to me 3 times. Is something wrong with my mobo?