single server exchange restarting continuously

One of my client restarted his exchange 2007 in which domain controller also installed.
Now it's kepps restarting.  Windows 2008 with dc installed. I don't know where to start with.
Even safe also I cannot login. Tried all the possible ways to login with ni luck.

Any advise highly appreciated.
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MAS (MVE)Technical Department HeadAsked:
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MAS (MVE)Technical Department HeadAuthor Commented:
There was a problem with C drive Array.
I deleted the array, recreated Array of C drive and restored only C drive from the backup.
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Neil RussellTechnical Development LeadCommented:
Have you tried to start the server in Active Directory Restore mode, as you said it is also a DC.
For future reference NEVER install exchange on a domain controller, it is very bad practice.
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MIRSYSCommented:
Do you mean it is stuck in a reboot loop?
If so you should disable restart on blue screen , press F8 during startup and select disable automatic restart on system failure.

You are probably getting a bsod. From there we can continue.
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MAS (MVE)Technical Department HeadAuthor Commented:
It shows black screen with mouse cursor and restart after sometime.
Client doesn't have AD restore password as well
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Neil RussellTechnical Development LeadCommented:
But they have a reliable backup of everything of course?
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MIRSYSCommented:
and do you have a ctrl-alt-del option?
Also did the client reboot it during updates or?
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MAS (MVE)Technical Department HeadAuthor Commented:
I cannot see even CTL-ALT-DEL
Also no updates was running

Client have only a backup of 9th August
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MAS (MVE)Technical Department HeadAuthor Commented:
I logged in to AD restore mode.
But it is not booting as normal. Seems like there is some issue with C drive array.
I have 2 Arrays 1 for C drive n 1 for drive(database drive)

The last successful backup  of the full server (using windows backup) is on  9th August.
What are the available option to try
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MAS (MVE)Technical Department HeadAuthor Commented:
Thanks to all, I select only my comment as solution as it may help others to find the answer quickly
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