Restore Windows boot

[mmosharov]

Hi there!
I have 32 bit CPU, one HD and legacy BIOS on my laptop (Lenovo Y430). On my drive I installed Windows 7 first, and then OSX Sierra. So it was MBR drive and I could boot Windows directly from it or OSX with Clover USB. That satisfied me because I did not want to try to make normal dual boot since it's hard topic for legacy BIOS, AFAIK.
But then I formatted one of partitions (non-OS) in OSX in Disk utility, since then I can not boot to Windows, instead I have message "No bootable device". BTW, I still can boot OSX.

1. Did Disk utility converts my drive to GPT layout?
2. What can I do to restore my Windows boot without reinstalling OS and reformatting my drive? Can something like "bootrec /FixMbr" help me?

I can try some solutions myself, but I have already made so many mistakes, so I would like to take some qualified advice first
Thanks for any help!

 

[Going Bald]

Boot with Windows install Media, select repair instead of install.

 

[mmosharov]

Booted with Windows install USB, recovered MBR with Disk Commander and set win partition active with diskpart.
Now I can boot to Windows
Thank you!