Unknown file system grub rescue
I'm using prolink netbook TA009 model. First I installed windows XP service pack 3 and then I installed Linux Mint 10. It's ok. But yesterday I deleted windows partition and Linux Mint partition. After that I installed ubuntu 10.04 (32 Bit). Installation was ok. But when I restarted ubuntu, "unknown file system grub rescue" message appeared. What will I do now? That's my problem. I only want to use Ubuntu OS.