Briefly I installed windows and then when I tried to install Ubuntu on a separate partition it couldn't see the Windows partition. So I opened Windows but I had lost the use of my mouse and keyboard. So I put in the Windows installation disc and tried to correct the partitions, but I had trouble navigating using only the keyboard. I ended up deleting the wrong thing and then my Windows installation was screwed and I was concerned that the partition table had gotten screwed up too. So I decided to format the whole disk and not knowing much about it I went about it the wrong way. I was going to use data destruction software because I could do it without being in an operating system. However I think I aborted that before it actually did anything as the program hung and afterwards it didn't seem there were any changes. Finally I was advised to use the following command in order to save time formatting an entire disk when it probably wasn't necessary.
dd if=/dev/zero of=/dev/sda bs=1M count=10
Right now the Windows installation disc says it cannot install on this disk, and on the disk utility using the ubuntu live CD, it gives me an error when I try to format the disk - error synchronizing after initial wipe timed out waiting for object.
I'm pretty desperate now. What do I do?