Dell Optiplex 380 Windows 7 will not boot

I get the Dell Splash screen and it freezes there. I tried unplugging the power and draining by pressing power button. I cannot use F8 or F2. I reset the memory. Same issue still. Any suggestion?
jsarinanaI.T. ManagerAsked:
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JohnBusiness Consultant (Owner)Commented:
Start with a Windows 7 DVD (or if no DVD drive, a bootable USB key). Can you see the hard drive?
jsarinanaI.T. ManagerAuthor Commented:
cannot get that far at boot, as far as it goes is the splash screen and freezes
David Johnson, CD, MVPOwnerCommented:
unhook everything and try again and see if it does the power on self test (POST).. There should be some beep codes. Othewise the MB is toast.
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☠ MASQ ☠Commented:
On the back of the 380 are 4 LEDs that illuminate during the different boot stages.  Wait until the computer freezes completely and check the combination and let us know what this is.  Provisionally though if you've removed and reseated the RAM already it sounds like the motherboard has failed :(

Diagnostic LEDS on Dell Optiplex range

Specific to Opti 380
Location of the back panel LEDs varies slightly with the case form factor so pick your model from that list and check the PDF for the page headed "Diagnostic Lights".
i would disconnect all disk drives (plse post your setup), and if needed, also cd drives
then you should be able to boot into bios
once this is ok - you add devices, and boot up to see how it goes this will help you determine the blocking one  quickly
here's my guide on how to :                  (Short-overview-of-how-to-troubleshoot-bad-hardware-when-a-pc-does-not-post)

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JohnBusiness Consultant (Owner)Commented:
If you cannot even boot with external media, there is a hardware fault on the computer.
jsarinanaI.T. ManagerAuthor Commented:
bad MoBo, will retire computer
tx for posting the result
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