" Alright I have a custom pc with the i7920, x58 motherboard, sli gts 250, 6g ddr3, cant remember the harddrive name. Well the os came from an older computer that i sold but kept the harddrive for my new build and I've had this build for about a year now...but about 4 or 5 months ago it said my os was like an unauthorized version to were my serial numbers you put into it to make it right was incorrect...as a lazy american it really didnt cause any problems so i was like who cares all my programs work everythings fine so no need to do anything...well now im sitting here trying to turn on my pc and it loads normal at first and stops at my drmos screen with like the options to go into bios setup. Where it normally just flashes up and loads windows, but now its just stops here then goes and says select a boot device...so maybe somehow my harddrive wasnt selected for this option...so i went into bios and the only option it gives me for booting up is my cd/dvd drive so now im a little worried since i have like 500$ in games on there and all my school work...So if anyone has any ideas what this is or what i should do tell me...i really dont want to have to buy a new operating system for this bullshit excuse my language. WORLDS LONGEST RUN ON lol.................................... Edit/Delete Message " That was my previous post and i just need an os. Well now I do have one windows 7 ultimate but it is saying. No Drives are found. Click Load Driver to provide a mass storage driver for installation. Is my hard drive done? Or do i need a specific driver I don't have?