alright. here's my problem. i originally had windows xp. i had tons of trouble installing windows 7 64 bit on a windows xp 32 bit system. i took out some ram as i saw that having more than 2g of ram on an older motherboard (i have a nvidia 750i). then i was told to make iso's of all this stuff. when i couldn't figure anything out i decided to take out my software hard drive and put it into an external drive casing. i reformatted the hard drive that way figuring i could just do a fresh install on a new hard drive. i did that and it was popping up with an error saying it was missing a windows file. at the time i had both hard drives hooked up. so i unplugged one hard drive and now it's popping up still saying there's an error and windows failed to start. i have not idea what to do. here are my specs; 2gigs of ram and the hard drive is a wd caviar black 500. i'm not sure if there's a setting in my bios or if i need to format the drive again since it was plugged in originally with 2 hard drives or what. but it's a newly formatted drive so i would assume that it would install with no problems like on a new computer. any help with this would be greatly appreciated.