If there is anyway you can get your cd drive working,or if you have a spear,insert the windows vista cd rom(the setup disc),and let it boot from cd and when you have got the files loaded go my language is english and in the bottom left cornor,they should be a repair my computer thing.
Click on that and go restore my computer.
There should be some restore points if there are not i am sorry you have lost all your data.
You will have to reinstall windows vista.
Or another Operating system.

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Windowsvista