I recently bought a MSI K9A2-CF motherboard and for some reason it won't work with my PSU. It works with others but not mine. With mine, it turns on and off in about 1 sec. I left the computer at the shop where I buy all my stuff so the guy can talk to the PSU salesman about it. The PSU is only 4 months old and when tested, works. Has this happened to anyone before or do you think you know what could be causing this? This is my PSU. Thanks.