SBS 2011 Farils to boot up normal, but can boot to AD restore mode from f8 menu

After a cold shutdown by the one of the users, the sbs server keeps restarting before even getting to windows logo. I tried No reboot on system failure and I know got a blue screen with this code:  
STOP: c00002e2 Directory Services could not start

I am able to boot to Directory Services Restore Mode, but not sure what to do next. We should have a local usb disk backup, but when I went to Widnows Backup, it did not show anything.  I saw a suggestion online that said to rename the log files under Windows\ntds folder, but that did not work for me. I also ran chkdsk on the c drive , but that did not help either.
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Senthil KumarCommented:
Can you give us the full error apart from the error code. You can refer the below link if you have that specific error
netcompAuthor Commented:
I have the sbs in a none virtualized envirmeny and have looked at all these post but they don't relate. Also, in my post I said that I had alredy tried renaming the log file which I only saw one. At this point I want to know hoe to restore from back up since I have back up on USB . I can only boot to directory restore mode.
Neeraj KumarSystem adminCommented:

If you have full system backup then you can refer the below mentioned article for restoration

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