Had a perfectly working dual boot, installed a 3rd one deleted it and now no boot is possible. What can I do?

[Shane888]

Hi everyone! I hope my big problem is a laughable to one of you!

I had a prefectly working dual boot pc with Win10 and Win7 installed on the same drive.

I recently purchased a second hand M-Audio Projectmix I/O that needed a firmware update that was 'allegedly' only possible with XP. So I created a new partition of 20 GB on that same drive and after seeing that the firmware update on the Projectmix wasn't working I decided to delete the XP partition with Easeus Partition Master thinking that I would revert to my dual boot as usual.

Instead my pc will not proceed with booting.

What can I do as I have no other pc to make a bootable installation USB?

 

[popatim]

Library, friend, or school computer as long as its not an OEM built pc like HP or Dell.
Microsoft even provides a utility to create a bootable flashdrive. All you need is the Wiin10 'Key' to prove you own a copy.
https://www.microsoft.com/en-us/software-download/windows10