my server all of a suden does not turn on

Hello,
My win 2008 R2 server was working properly until a few hours. The electricity suply was normal and there is a small UPS system for 15 min. All the network continues working but the server will not turn on.

1) Is this the power suply box inside the server ? and what is the best way to test it?
2) What can I do to prevent this kind of problem?

Best regards,
RGuillermoProject ManagerAsked:
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Fred MarshallConnect With a Mentor PrincipalCommented:
The most common failure of this type is the internal power supply. The simplest and perhaps the best test is to replace it.  Some "tester" only test the power supply output voltages but not under load.  They can test OK and not work when connected to a load.

The next most common failure of this type is the computer memory.  Remove the memory one stick at a time and see what happens.  Reinstall them one at at ime to find the bad one.

You may also disconnect all the power connections from the hard drives, cd/dvd drives, etc. to see if one of them is overloading the power supply or preventing the system from starting in some related way.
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IT-Monkey-DaveCommented:
UPS's can fail.  Try plugging the server directly into a wall outlet.  Does the UPS itself have power?  Has it popped its own built-in circuit breaker?  AC wall outlet breaker ok?
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motnahp00Commented:
1.) Maybe. Some supplies have an indicator light on the outside. Your motherboard could be dependent on working components prior to powering on.

2.) There are too many variables to prepare for. Just maintain a good backup for worst case scenarios.
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theras2000Commented:
Try unplugging the power cable/s from the server, then put them back in.
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Rick HobbsRETIREDCommented:
1. What Manuf. & Model # of the hardware?
2. Try eliminating UPS
3. Check cables for tightness
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RGuillermoProject ManagerAuthor Commented:
Thanks to you all. It was the power supply. I replaced it and inmediate backups. Everything else working.
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