Question about Dell OptiPlex™ GX270 PC Desktop

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Computer will not turn on. the on indicator is lit. but there is no graphics on the monitor

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  • cliffsir Jan 21, 2009

    I have this same type problem. Dell SX270 power turns on, power light turns amber and stays on steady, fans run very high speed, trouble lights on back do not light, no post. The system was given to me. It ran fine for about an hour. Then it just shut down. On reboot is when it started doing everything.
    I have looked at the motherboard and see no capacitors that look bad.
    Any suggestions?
    Thanks

  • Frank James May 11, 2010

    Adding to the above requests, do you hear a beep when the computer is started? Is it more then one beep? One beep indicates that the PC is posting as it should, multiple beeps may imply the error. If more then one, how many?

  • DEKR
    DEKR May 11, 2010

    do you hear any fans running does it seem to be on like usual just no video.

    have you moved your system or anything that may have caused card to become loose

  • chessyang May 11, 2010

    also the model number?

  • IQUIT May 11, 2010

    the power LED, is it Amber or Green? On Steady or Flashing?



    Also, the 4 diagnostic LEDs on the back, are they one?

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Hi,

This is most likely A motherboard Fault.
Faulty CPU Or RAM Possible.
Power-supply Problem/Fault.
Or possible Corrupt Bios.

Mike @ Compurepair.

Thankyou For Using Fixya.


Posted on Jan 21, 2009

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1 Answer

Screen stays black but lit when shut down


If the monitor led is indicating stand by and it seems as if the monitor is still on, could be a sign of an aging monitor. As long as the led changes along with the function of the monitor there's really no way to indicate the monitor still on after shut down especially when the led is amber telling you it's on standby mode.

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I have a dell studio 540 desktop, I need to restore to factory settings but my monitor will not stay open. It opens for a few seconds then immediately goes into power saver mode and turns off, how can


I see two things here, but need clarification;

1) Monitor goes to Power Saver Mode, then turns -> OFF?

Sure that monitor didn't go into Standby Mode?

2) Why are you performing a restore back to factory settings?
Pick up a virus?

Primer;
The monitor receives a signal. A video signal. The video signal comes from the computer.

If the monitor is NOT receiving a video signal, then the monitor will state No Signal.
This is for older monitors.

New monitors do not state No Signal anymore.
It's Power Saver Mode, or Sleep Mode.

If the monitor is truly OFF, the Power On button will Not be lit up.
Or the Power On LED light on the monitor.

Monitor power on LED is lit, or Power On button is lit?

Monitor is not receiving a video signal;

Use a monitor cable from a KNOWN to be working monitor, for a temporary test.
OR,
Use a Known to be working monitor, and it's monitor cable.

Need to find out if monitor cable is good.

Monitor cable checks out good?

Then problem is computer.

The two leading issues with desktop computer failure, is;

1) Computer is dirty inside
2) Power Supply inside computer is bad.

Please post back in a Comment.
Regards,
joecoolvette

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I have HCL Ezeebee desktop computer when we boot the system monitor, keyboard, mouse blink for a while and monitor (HCL) show 'no signal' message, and keyboard num lock led not display mouse i


No signal at the monitor indicates (if you know the monitor is working ok) a failure of the graphics chip or graphics card, The lack of indicator light on the num lock LED and the lack of power to the mouse would indicate that there is a major issue with the motherboard.
you can try using another monitor to confirm the problem lies with the graphics, and in the case of the keyboard and mouse, swap them for a usb version, if they work, the Ps2 ports are probably damaged.
I'd be thinking of replacing the motherboard

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Screen was blank but power light lit. Rebooted power light lit (light blue but no working screen?


Shut down system by using poer button on tower then unplug tower. Turn power back on and boot in "safe mode with networking". When screen comes up, click on "start", then "control panel". Find and click on "device manager", open and click on continue. Click on box(on right) of "display adaptors". Do you see a warning, ?, !, or yellow triangle? If so click on that and follow proceedure. Right click on your device and in the list you should see "disable". If you see "enable" click on that and exit. Right click on your device again and click on properties. You should see "this device is working properly". If you are using on board graphics, not a graphics card, click on "drivers" tab. Then click on "automatically search for updates...". When finished, restart your system. If you have a graphics card you should update with manufacturer. Let me know make and model of card if you have one. If you are getting beep codes it could be your ram.

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Monitor was in standby mode, computer was on. Now it shows no signal and when we try using the menu button (2) it flashes white, black, red, green, blue then a teal color.


the monitor is not receiving a signal from the computer which is why the multi coloured bars are showing. Ensure the lead is connected and is connected to the correct port of your computer. If it is connected correctly then either your graphics card is faulty or the lead, or monitor is

Apr 03, 2011 | PC Desktops

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I CAN SEE THE CPU FAN RUNNING, but i cannot see anything on my monitor,i mean my monitor is still in sleep mode


1) If the monitor has a removable monitor cable, and you have a Known to be good one to use for a test unit, try it. If it isn't removable, try another Known to be good working monitor.

2) If the monitor cable, and the monitor proves to be good, the next thing to suspect would be bad graphics.
Bad Integrated graphics on the motherboard, or if a graphics card is used, a bad graphics card.

3) I suspect it is a bad Power Supply. An issue that comes up so much, that I would skip 1 and 2 above, and check the Power Supply.

A) ALL of the LED lights, mumba_mwaba, use less than 1 Watt of power when in use.

B) EACH fan uses 2 to 3 Watts.

C) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is.
(Older processors such as a Pentium II for example use less)

Enough power to light LED lights, and spin fans, (Or spin a few times and stop), but Not enough power to turn the Processor on.

This is why you may see LED lights lit, and fans spinning, but the computer isn't working.
The computer isn't sending a video signal to the monitor.
No Signal.

Do you have a KNOWN to be good, compatible Power Supply to use for a test unit?
May sound far fetched, but perhaps there is someone who has upgraded to a better computer, and has a computer they're not using, and you could borrow the Power Supply for a test unit.

Oct 29, 2010 | PC Desktops

2 Answers

Computer monitor don't work at all.


So basically your monitor's power supply system died.
Nothing much a non-technician could do about it.
Get it repaired, if under warranty, get a replacement before the coverage duration expires.

Jun 07, 2010 | PC Desktops

1 Answer

Just received Refurbished Advent CBE 1401. It is being replaced because power switch is faulty - but I have questions about machine. 1. When initially switched on the switch turned red is this normal? I...


1) No. The switch color should have been Green

2) No Signal on the monitor, indicates the monitor is not receiving a Video Signal from the computer.

A) Could be due to a faulty monitor cable.
Monitor cable is used on a working computer for a test,
Or,
working computer's monitor cable is used on the Advent for a test.

B) Could be due to the graphics 'engine' on the motherboard, or on the graphics card is bad.

[Graphics 'engine'.
GPU
Graphics Processing Unit.

http://en.wikipedia.org/wiki/GPU ]

If the computer is using Integrated Graphics, the GPU is on the motherboard.

(Integrated Graphics is also referred to as OnBoard Graphics. Meaning On the motherBoard)

You will know if it's Integrated Graphics, because the monitor cable will be plugged into the VGA connector, on the motherboard

http://en.wikipedia.org/wiki/VGA_connector

Since you indicate an adapter was included, to adapt to a different port (Connector), it could be a VGA to DVI adapter, or a DVI to VGA adapter.

Your monitor may just have a VGA connector on the monitor cable.
Hence you would use a female VGA to Male DVI adapter.

Your monitor may be an LCD flat screen monitor, and has a DVI connector on the monitor cable.
Hence you would use a female DVI to Male VGA adapter.

DVI
Digital Visual Interface

http://en.wikipedia.org/wiki/Digital_Visual_Interface

VGA monitors are Analog.
LCD monitors are Digital.

A computer puts out a digital signal.

If a VGA monitor is used, the computer has to alter the Digital signal to an Analog one.
This slows down the video signal.

If your monitor (In any case. Not just this one), is an LCD flat screen monitor, it is best to use a DVI monitor cable, and plug into a DVI port on the computer, if available.

If your monitor is a VGA (CRT. Cathode Ray Tube), monitor, and you have a DVI connection on your computer, using the adapter will do you no good.

The adapter just uses the contact pins for VGA, that are present in that DVI adapter, and hence the DVI connection on the computer.

You're still just getting an Analog VGA signal.

Example of a female VGA to male DVI adapter,

http://www.directron.com/dvi.html

If the Integrated Graphics are suspected to be bad, a graphics card is used in the appropriate expansion slot, for a test.

If the graphics work then, the graphics card is left in service.

After I test the monitor cable my next procedure is to suspect the Power On switch, or the Power Supply, and go to the graphics next.

The reasoning is that Power Supply failure, is the number one cause of computer failure.
The next is the Power On switch, then Electrolytic Capacitors used on the motherboard.

(Specifically, any Electrolytic Capacitors used in the motherboard Voltage Regulator Circuit)

If the Power On switch is bypassed, the diagnosis will reveal if the problem is the switch, or Power Supply.

Bypass the Power On switch, and the Power Supply comes on?
Problem is the Power On switch.

[One Power On switch I have found to fit a lot of computers. The Power On switch goes into the plastic Power On button,

http://www.directron.com/atxswitch.html ]

Bypass the Power On switch, and the Power Supply does Not come on?
The problem is the Power Supply.

The Power On switch is bypassed using a jumper wire, from the green Soft Power On wire, to ANY black Ground wire. The contact made is a brief momentary one.

The jumper wire is used at the back, of the 20, or 24-pin ATX main power cable connector.

To be continued in an additional Comment.


Jun 04, 2010 | PC Desktops

1 Answer

Computer boots up when plugged in,monitor powers down


hi there.......

it is the memory it has to be matched with the actual fsb of the cpu if its slower then it wont switch on.....

and some dell pc's wont work with 1gb sticks so accertain which ram is compatible with the motherboard

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1 Answer

Viewsonic VX2235 22" Flat panel monitor has been gradually declining with powering up, blinking on for a couple of minutes and then goes black with green power light indicator. Turning power off for...


connect the monitor with another desktop. If if works then problem is with your ram/graphics card or motherboard with inbuilt graphics. If the monitor functions the same way as before have a look at the pins on the connector. Bend/dirty pins can play havoc. If they are ok take the monitor to service centre.

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