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I can't boot into a usable system anymore. What should I do?

I installed Ubuntu on a laptop's hard drive along with Microsoft Vista. It was working perfectly, but a few days ago it stopped working. I do not know what has happened....on starting it is showing the following screen:

GNU GRUB VERSION 1.99-12ubuntu5......
MINIMAL BASH-LIKE line editing is supported. FOR THE FIRST WORD, TAB LISTS POSSIBLE
COMMAND COMPLETIONS. ANYWHERE ELSE TAB POSSIBLE DEVICE OR FILE COMPLETIONS.
GRUB>
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marked as duplicate by Jacob Johan Edwards, belacqua, jrg May 17 '12 at 19:02

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
sory, i do not have live cd..as i have downloaded it from ubuntu's website.. –  harry May 16 '12 at 16:04
    
it is a windows installer (.exe) wubi... –  harry May 16 '12 at 16:43
    
@harry -- see if the linked 'possible duplicate' helps. Are you able to make a LiveCD with a different computer? –  belacqua May 16 '12 at 20:45
    
harry, it's quite possible to recover this. This happens to Wubi installs where the root.disk is corrupted or missing. You can find more discussion here: askubuntu.com/questions/85268/grub-booting-problem (I mentioned this before but my comment was deleted). –  bcbc May 18 '12 at 6:20
    
I am doing something similar HERE!!! askubuntu.com/questions/366001/ubuntu-13-10-grub-2-0 –  toobsco42 Oct 26 '13 at 5:30

1 Answer 1

Boot the Ubuntu Live CD.

Press Ctrl-Alt-F1

login as root

sudo grub-install /dev/sda
sudo update-grub
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1  
These commands are incorrect for installing grub from a live CD. Also since this is a wubi install, it will stop the computer from booting. I can only -1 once though ;) –  bcbc May 17 '12 at 3:42
    
@bcbc: Or you can edit the answer or write a correct answer... –  naught101 Jan 29 at 13:06
    
@naught101 or... –  bcbc Jan 29 at 19:52

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