I first installed Windows 7 ultimate onto my machine and using Windows 7 built-in partitioning system, I had partitioned my disk into many smaller disks of NTFS file systems. I then tried to install Ubuntu 12.04 onto my machine.
I had installed Ubuntu and Windows 7 side by side because I needed both the operating system but while booting I was getting an error as
Attention out of range H:92.6KHz V:58.2Hz
I was not getting any dual boot menu no msg was seen except the above message. I tried to press the down arrow thinking that it might take me to the option. First time it directly logged into Ubuntu then next time Windows 7.
When I logged into Windows 7, I deleted the volume in which Ubuntu was installed. Now, I am getting the error as
error:unknown file system grub rescue>
I want Windows 7 back and a better way to install both operating systems. Please give me some help in this regards.