htoler
1 Copper

yellow light motherboard computer will not boot

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I've inherited an Optiplex 780 that had no harddrive but was working when the previous owner removed it.  I purchased and hooked up a new harddrive.  When I try to turn the computer on, I just get 2 beeps and no booting.  No flashing light codes or further beeps.  There is a yellow light on the mother board that does not flash.  Anyone have ideas?

Thanks

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speedstep
6 Thallium

RE: yellow light motherboard computer will not boot

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No memory Detected is LOW and SLOW beep beep beep.

2 Beeps means there is an error.  Video is common.

If there is a video card installed remove it.




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5 Replies
8 Krypton

RE: yellow light motherboard computer will not boot

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Two beeps means no memory is detected.  Are there memory modules in place?

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htoler
1 Copper

RE: yellow light motherboard computer will not boot

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Plenty of memory modules.  Any other ideaa??  Thanks

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RoHe
6 Indium

RE: yellow light motherboard computer will not boot

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LED on motherboard is perfectly normal.

What form factor 780 is this, desktop, tower, small form, ultra-small?

Have you checked the 4 diagnostic LEDs on rear of PC when it won't boot? Look up error code in the manual: downloads.dell.com/.../optiplex-780_service manual2_en-us.pdf

Tried installing a fresh motherboard battery?

Are you sure those RAM modules are compatible with this PC? Have you tested them one at a time in slot 1?

Ron

   Forum Member since 2004
   I am not a Dell employee

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speedstep
6 Thallium

RE: yellow light motherboard computer will not boot

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No memory Detected is LOW and SLOW beep beep beep.

2 Beeps means there is an error.  Video is common.

If there is a video card installed remove it.




Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






Get Support on Twitter @DellCaresPro

htoler
1 Copper

RE: yellow light motherboard computer will not boot

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It was the video card, problem solved, THANKS!

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