I installed Windows 7 Home Premium 32-bit over 64-bit by mistake

[dadeebz]

My pc had a virus so i found a windows 7 32bit professional cd that I presumed was 64 bit, bad mistake. It was 32 bit and i installed over the original 64bit home premium I had on my system. Can i get the 64 bit back? my pc was a present so i dont have the original cd for the os but theres a sticker on the side with the original product key for the 64bit os.

 

[Tmagic650]

The PC should work fine until you get another copy of Windows 7 64-bit. If you try to install a 64-bit OS on a 32-bit CPU the install will stop quickly, but a 32-bit OS will work with a 64-bit CPU