My Macbook ( Old Version) won't start!

Hello,

my name is Daniel Bizumuremyi from Rwanda.

I use a macbook old version white and last week I tried a tip that I got from here as I had lost my Mac DVD to reinstall the OS, I wanted to create a new admin account to get rid of the admin account that was on my mac the time I bought it and also it was a second hand.

The tip I got from here is

mount -uw/
rm/var/db/.AppleSetupDone
shutdown -h now

I tried this tip for several times but I fail and now my mac can't start. When I press the power button I hear a chime sound as usual for a normal working computer, the logo screen appear ( Apple Logo), the loader image also but then after a while loading it restarts again and the same screen appear again and again. I mean it keeps restarting.

Before I try this tip the File Vault was activated in a manner I do not know until now and I could not enter the old account as before dough I was also unable to install applications because of admin password bu at least I could work with my computer.

Help Me! What can I do? Is there anyway to fix that or I will have to my HDD? which is also difficult to get in the place I live.


Thanks!

Danny