Ok, this is the first computer ive built, so keep that in mind. Any help is greatly appreciated. i bought a new motherboard, ram, processor, gcard and i kept the same HD. All the hardware was correctly installed. When i first turned the computer on, i noticed the HD wasnt on master but on slave so i switched the prongs in the back until when i booted it said master. then it went through bios and i got to my password screen and after i put in my password then a window came up saying i need to register and activate XP. quit ****ed, i thought id switch the prongs again and maybe see if i could bypass that XP window. instead every time i boot up i get a "verifying DMI Pool Data......". then "Master Boot Record Error"