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Monitor says its in power save mode

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Im new to this forum, and i must say that I am
happy I came across it! Thanks for all the great info!

OK..here's whats happening

My friend asked me to check her computer because she
cant get it to start, I hook up the computer at my house
and click the "on" button, the computer starts up but
the monitor will power light comes on (green) but seconds
later it turns yellow. Upon hitting one of the buttons on
the monitor, the screen says that its in Power Save Mode,
move any key on keyboard or move mouse.
But hitting any key or moving the mouse, nothing happens
its like the computer isn't seeing keyboard or mouse.
She has a Dell Dimension C521 with Vista and thats all
I know because I haven't been able to run the computer,
she doesnt have a restore or Vista disk, would anyone
know or have any idea what might be happening? I know the
info is vague, I apologize, but the girl couldnt answer
any questions because all she knows is how to turn it on
an go online and thats all.
Thanks for any help or suggestions that you may have.

by the way..its nice to meet you all!
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Things for you to check

Have you tried another Computer Screen on her computer to see if it does the same thing or tried her screen on another computer.

Does this happen only once windows starts to load or everywhere (bios post, bios menu).

Is she using the integrated NVIDIA graphic or an outside PCI-X card.

Sometimes this is an issue due to a malfunctionning PSU (Power Supply Unit) or one that cannot deliver enough power. It is advertized that her system came with a 280 watt PSU and if she has a graphic card (PCI-X) that needs its own power then her PSU might not have enough power to initialize the video hence going into power saving mode right away.
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thank you for answering...

you know im not sure what she has as far as
using an integrated NVIDIA graphic or an outside PCI-X card.
i will try the monitor on another machine, dont know why
but i thought it may not be reckonized by another computer
but i will give it a try and also see about that graphic card
with that graphic card needing its own power, where does it get
power from? the motherboard? i will look inside and see
what i can spot.
i will let you know what i find..ok? thanks for the input
im also going to look up that computer
(dont know why i didnt think of that either)

i will keep you informed!

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