I had a dual boot Win XP - Ubuntu. I deleted XP and I installed Win 7. Now, GRUB doesn't exist anymore. I made a live usb with ubuntu to repair grub, but usb doesn't boot(i used it in past to install and worked, but i formatted with Low Format Tool and USB doesn't boot anymore). So, I installed GRUB2Win and I created a Ubuntu menu entry, when i boot to ubuntu i receive: "Out of range".
Why this is happening? And how I can restore grub from windows or I it isn't possible, how I repair my USB?