Hi, i just bought a new hitachi sata 500gb internal harddisk on saturday, Have try install afew time windows xp but fail, the message keep appearing blue screem saying" it is for safely that windows have stop to prevent further damage to the computer, if you have install any new hardware or drive please check if it ok. if not remove and do a chkdsk/f before restalling the system" something like that. the thing is the harddisk is new, and this is the first time installing in the os (windows xp). Try to change sata setting, but i can only see something like "SATA1~disable or enable." below that setting there is 3 option. "SATA in IDE control mode, SATA RAG(Can't remember the spelling but something like mirroring,), other mass storage." I set it to SATA in IDE mode and only menage to boot it in safe mode, normal startup everytime blue screen and auto reboot. Wonder is there anything to do with the bios or the system don't support? What can i do, Please help? And if i put a add on sata card will it help? Syetem, AMD 3800+ Motherboard socket 939 Ram 512mb Thank you.