I know this question has been asked multiple times, but I cant get it to work.
I use a PC with Windows 7 pro sp1 and Ubuntu 16.04 partitioned. A while ago my graphic drivers for Ubuntu broke and I wasnt able to fix it (Amd radeon hd). Later I deleted my Ubuntu and unfortunately grub (the whole partitions). I got the "Grub rescue message. No such partition." Couldnt start windows anymore.. I made a bootable USB with Windows 7 and tried to repair my Windows, but when I came to "Repair your computer", there was no C: drive with windows located. I continued with the Command prompt, but I couldnt list it with DISKPART. I startet windows repair and after restart I got following: atombios_crtc_mode_fixup radeon error unable to allocate a ppll
Then I gave up and made a USB stick with Ubuntu 16.04 (newest) and installed Ubuntu. Now I get to the Grub bootloader, but it wont recognize Windows 7. When I boot into Ubuntu, my Monitor turns off after a short duration. I can work with a Terminal with alt+ctrl+shift+f2. I tried to reinstall my graphicdrivers, but ended up with problems when reconfiguring the xserver-xorg. I appreciate any help. Really need to save my windows