I have a A7V266 motherboard. My PC started acting up on Sat. It will shut down itself. When I restart the computer, it will give me long beeps (Beeps..., Beeps...., Beeps...) and it doesn't end. When I restart it again, it will go to the BIOS, and after I reset the CPU setting, it will restart just fine. I already replace the power supply, and it is still doing the same thing. Does it sound like a motherboard problem or a memory problem?