I downloaded Windows 10 then tried to go back but what happened is that it deleted every file including the booting files for it. Is there anyway I could get Windows 10 or 7 back or any way to make this work because I just bought this computer from a pawn shop.
crwdns2934109:0crwdne2934109:0
crwdns2934065:0crwdne2934065:0: 21
3
If the Boot Files are missing you need to reinstall the system. However, you *might* loose all your data.
However, booting to Windows Recovery from your windows installer disk and opening Command Prompt and entering *fdisk /fixmbr* might work.
crwdns2934105:0crwdne2934105:0
crwdns2936751:024crwdne2936751:0 0
crwdns2936753:07crwdne2936753:0 3
crwdns2936753:030crwdne2936753:0 17
crwdns2942667:0crwdne2942667:0 207
