Question about Dell Dimension C521 PC Desktop

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When I power on my desktop, the fan comes on and the orange light is lit on the power button. But no light on mouse and keyboard. No signal to monitor too. The fans keeps running until I press the power button to shutdown.

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It does not have to do anything with the ram it could be an issue with the motherboard or the power supply, chseck for the diagonistic lights at the back or the front of the computer and also check if the light is blinking or steady.

Posted on Jun 07, 2009

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The prolem may with the memmory (Ram) First you can refix the memmory. if the problem not solved replace the memmory.(Ram)

Posted on Jun 04, 2009

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Have you checked the keyboards light? Is it lit? When you press on the CAPSLOCK button, does the light changes in the keyboard?

Try to unplug the hard drive, and DVD from the mobo and see if it goes well.

If no go, try removing the RAM sticks and see what's on the screen when you turn it on. Then put each part back one by one, checking the computer for any change or something like that.

Dec 16, 2012 | Computers & Internet

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Have a E-Machine that keep displaying in powersave mode


eMachines are a budget computer.

Designed to save the consumer money.
One of the items used that cost is saved on, is the Power Supply.

Power Supply is generic, and of low quality.
1) Low quality Electrolytic Capacitors
2) Low quality Power MOSFETs
3) Low quality Rectifier Bridge
4) Too small a gauge of wiring is used

Plus most consumers do not keep the inside of the computer clean, and if they do the Power Supply is usually neglected.
The two leading causes of desktop computer failure; the computer is dirty inside, and/or the Power Supply is bad.

With a weak voltage power rail you may see LED's light, and maybe fans spin, but there won't be enough power to turn the Processor on.

[No Processor operating, no computer. No computer = no video signal to the monitor. No Signal, Power Saver Mode, or Sleep Mode is indicated ]

1) If ALL of the LED's were lit up they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.

See if there is an unused working computer that has a KNOWN to be good, Compatible power supply; that you can use for a test unit.

Or use a multimeter to test the three main voltages, coming out of the Power Supply
3.3 Volts (DC) [ Orange wires ]
5 Volts (DC) [ Red wires ]
12 Volts (DC) [ Yellow wires ]
[ALL Black wires are Ground wires ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 16, 2012 | E-Machines Computers & Internet

1 Answer

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usb stick doesn t light also on mine but works perfectly. press once on stick button and once on mouse "setup" button and they will connect.

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1 Answer

Hi - our dell dimension c521 is stuck in power save mode. The light on the monitor is solid orange and will not respond to the keyboard or mouse


A solid amber light indicates a pre-POST failure has occurred. The system has received a Power Good signal from the power supply so it's not a power supply issue. HERE is the documentation that tells what the lights mean and possible solutions.

Aug 26, 2010 | Dell Dimension C521 PC Desktop

2 Answers

Computer monitor won't tur on


check the connector to the pc from the monitor. it may have come loose. if you have a mouse, try moving it and see if the light on the monitor turns to green. it is possible the video has failed.

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1 Answer

No mouse,no keyboard, and no monitor?


try to connect it with other keyboard,mouse and monitor....if they will run, the keyboard,mouse and monitor may be defective or damaged..but if they did not run properly,,
maybe somethings wrong wit your unit...
try to connect it first and see whats the result...
please tell me what are the results...
you may post it here...



chaw

Jun 17, 2008 | Computers & Internet

1 Answer

T2615 E-Machine


Sounds like mb is not posting,
remove all cables to drives,
remove all cards except video , re-seat video.
remove all external devices keyboard,mouse , usb etc...
remove all but one stick of memory
re-seat the cpu
power up and if fans all turn and still no post then power down, clear bios jumper , swap memory
if fans turn and still no post pull memory ,power up does it beep,
if it does memory may be blown.
swap video card or cpu
at some point you wont be able to swap much without extra parts or help.

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