Black screen on startup

I have a client that has a Dell PowerEdge 840 running SBS 2003.  They called me out saying the server wouldn't turn on.  The server will power on and goes through the post process.  After POST it just goes to a black screen.  If I press F8 right away it will bring up startup options but goes to a black screen eventually.  When I choose Safe Mode it goes through the process and locks.  The last line displayed is loading acpitabl.dat.  Also when the screen goes black the monitor does have the sync light that it is receiving a signal and the keyboard seems to lock.
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LiberatingInsightConnect With a Mentor Author Commented:
Turns out the issues were related to a bad Motherboard, CPU, and RAM according to Dell.  They are sending replacement parts out to me.  (Sounds like a "shotgun" approach by Dell)
JAN PAKULAICT Infranstructure ManagerCommented:
1 pull all the drives except for the OS drive. After that try to boot,
If not
2Check your PSU on server - servers need more juice then pcs
3 replace the SATA cable
4  move os drive to a spare port on another SATA card in the box

Jan ICT tech CCNA
JAN PAKULAICT Infranstructure ManagerCommented:
and dont forget to chkdsk all drives - especially OS one
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JAN PAKULAConnect With a Mentor ICT Infranstructure ManagerCommented:
it also might be cmos battery dying - that  would cause raid build servers to fail - (raid would become depreciated)
Cause: RAID Problem


Turn off the server.
Unplug one of the hard disk in your RAID.
Boot the server.
The RAID status now should change to degraded.
You should now be able to see the login screen.
Login, do the necessary backup.
Plugin the hard disk, rebuild the RAID array with its software.
LiberatingInsightAuthor Commented:
No luck so far.
The server does have a RAID controller and had said the RAID was in a good status.  Reset BIOS settings and that didn't solve the issue.  Going to try and boot off a 2003 Server disk to see if I can run chkdsk.
Any other ideas?  What is acpitabl.dat?
discgmanConnect With a Mentor Commented:
Its the cmos battery error.
LiberatingInsightAuthor Commented:
The CMOS battery was not the issue but helped me toward finding that it was a faulty motherboard.
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