Here are the specification for the new system I built. 1:Seagate Barracuda 7200.10 ST3250310AS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - OEM 2:Intel Core 2 Duo E7300 Wolfdale 2.66GHz 3MB L2 Cache LGA 775 Dual-Core Processor 3:G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory 4:ASUS P5Q SE PLUS LGA 775 Intel P45 ATX Intel Motherboard On this system I installed Windows XP Pro 64 on a 50GB partition. Everything went fine without any problem. But when I went to create another partition on this system using disk management the format will fail and I won't be able to boot into windows again. I look into every where for a solution but I couldn't find any. I have been working on this machine for a week now. By the way, this is my first time using SATA Drive. Thanks in advance for any kind of help I can get from anybody out there.