HELP! Re-using Hard Drives on new Build

[Parsnip]

Im going to be upgrading a lot of parts on my computer for mid price gaming. I want to know if I can re-use the case of my current pc as well as the hard drive, the disk drive, and any other things possible. http://www.newegg.com/Product/Product.aspx?Item=N82E16883107514 <--- Current PC (trying to save the parts)

New Parts:
GPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150515
Power: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094
CPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16819103727
Mobo: http://www.newegg.com/Product/Product.aspx?Item=N82E16813157198

 

[Wamphryi]

You can certainly reuse the hard drives but only after you format your system drive and reinstall your OS fro scratch. I'm not sure about the case as it is an HP. I would recommend leaving your PC in one bit and selling it for what you can get. Put the money into a new case and HDD and start afresh. It may be difficult to activate the OS that came with that system. Buy a new OS as well.

 

[Parsnip]

You can certainly reuse the hard drives but only after you format your system drive and reinstall your OS fro scratch. I'm not sure about the case as it is an HP. I would recommend leaving your PC in one bit and selling it for what you can get. Put the money into a new case and HDD and start afresh. It may be difficult to activate the OS that came with that system. Buy a new OS as well.

Actually I just bought windows 7 for that machine and got the 3 copy version so the OS won't be a problem. How much could I yield from it with stock parts, and windows 7 included?

 

[clarkjd]

You can certainly reuse the hard drives but only after you format your system drive and reinstall your OS fro scratch. I'm not sure about the case as it is an HP. I would recommend leaving your PC in one bit and selling it for what you can get. Put the money into a new case and HDD and start afresh. It may be difficult to activate the OS that came with that system. Buy a new OS as well.

If you decide to sell your old PC, I would keep the old HDD, as there is no telling what personal information is on that disk and can be recovered, even if you re-format it.