HD Wiped clean and can I just install Windows 7 OS and start from scratch?

[ponpoko3]

Hi there,
I've just successfully cleaned my hard disk with WipeDisk software.
I meant to throw the PC and I throw away the recovery CD etc.
Now, my husband's PC is getting frail and as my PC has better spec than his, we starting to think about re-using it.
Could I just buy Windows 7 OS and start from scratch to revive the PC?
Please help.  Thanks!

PC:  HP Pavilion A6422 Desktop
intel Core 2 Duo processor E4600
RAM 3GB

[Allan]

http://windows.microsoft.com/is-IS/windows7/products/system-requirements

[ponpoko3]

Thank you for your reply.  I think my PC satisfies the system requirement. 
Please let me know if I could go ahead and buy the OS and install it OK?
Thanks!

[Allan]

I don't want to be the one responsible for you spending your money, but if you say your system meets the minimum requirements I can't see any reason why you should not go ahead and do it. Just make sure there are Windows 7 compatible drivers available for all of your hardware (including a chipset driver) before you buy it.