I have encountered serious problem while experimenting with Ubuntu/Mint. A few days ago I felt like trying Linux. I had Windows 7 installed on my SSD drive. Since I had one free HDD I decided to install Ubuntu there and Ubuntu boot overwrote my standard Windows boot loader, so I had to select the booting drive each time starting my computer (from BIOS F12 button).
After a few days, I decided to try Mint since Ubuntu didnt feel good to me. I have installed Mint, on the same partition as Windows (on the SSD) and removed the Ubuntu ext4 partitions from the Windows hard drive manager.
Now, each time I try to boot my computer from any drive I have installed I'm getting the message from GRUB "no such device [number]".
I am unable to run Windows 7 due to the error mentioned above.
I am not able to run Linux Mint due to the error that system cannot find system file source.
I would really like to restore my Windows files. Please keep in mind, that only tool I have to use right now is a live Mint USB drive.