Uncertain as to what the cause is, may as well start with the heart - every one in a while, (almost every time I start up the desktop). In the middle of 'working' the PC will freeze up. There is a red light on the motherboard that started lighting up about 5 -6 months ago. Uncertain as to what it refers to. today something different happened, the PC restarted without prompting me. The mother board is: ASUS M5A97. Power supply: Neutron 750watt. Memory: Corsair 4GB (x2) Vengeance. OS: Windows 7 Ultimate 64bit. Processor: AMD FX(tm)-4100 Quad Core 3.6GHz. The OS hard drive is two ADATA SSD, program drive is a Western Digital 400GB HDD. Is there a conflict between the two different types of drives? The SSDs are RAIDED. The SATA ports that the drives are on, are RAID ready. Removed the RAID card thinking that would resolve the situation. seemed to for a while - maybe about a week... Help?