So I have a toshiba laptop and it originally runs windows 7 x64 bit. I had restrictions on it so i ran the tool ubuntu. I messed up and deleted my partition so it could only run ubuntu now. I Wanted windows back so I made a boot disk downloaded while running ubuntu and installed windows 7 x32; i discovered things wouldn't run because I installed x32 bit on accident! So i downloaded x64 bit and tried to install windows 7 x64 ( proper version ) but it said "cannot run this program, please make sure you have 32 bit not 64 bit" so i formatted my laptop so it no longer read x32 bit and it said BOOT MGR ERROR press ctrl alt delete ( like it should ) and I ran my CD Rom and It stayed black for a while and then brought up boot error again! I have tried many sites and possible solutions, this is my last hope; how can I make it read disk? The windows 7 x64 bit boot disk has all stuff properly burnt on it!