Question about HP Pavilion a305w (DM181AR) PC Desktop

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I can't get monitor to come on even though the power light is on

I bought a new graphics card but I can't get the monitor to come on long enough to disable the integrated video off and turn the card on.

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  • rclifford Feb 15, 2009

    problem is even with the integrated video chip by itself without the new video card, I still cant get the monitor to come on. Thats why I bought the video card.

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  • 2,992 Answers

Since it's a new card and you know it's working, install it last. Take it out for now and use the integrated video. Start the computer, enter the BIOS setup and disable the integrated video. Save the new settings and shut off the computer. Then put in the new video card and restart.

Posted on Feb 15, 2009

  • Feb 15, 2009

    There is likely more wrong with the motherboard than just the video, then. Most boards autodetect the presence of a plug-in video card and use it automatically. I thought your problem description sounded odd, but figured maybe your board didn't autodetect. I would suggest trying another power supply as a first check, then consider replacing the motherboard if it still won't start properly.

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When I turn on my computer monitor it goes to sleep within a few seconds. What can I do?


For desktop computers: check that the computer is on. Make sure that the monitor is connected to the correct port on your computer. Some desktops have graphics ports on the motherboard and a separate video card. In that case, the motherboard port(s) will be disabled.

Try a different cable and make sure that both ends are secured properly. (If there are multiple input options on the computer and the monitor, try a different port. Sometimes, a port fails. There are adapters available for DVI to VGA or DVI to HDMI if you don't have extra inputs on the monitor.)

Try a new video card and check that your Power Supply is rated to power the entire system. (Some video cards will not work at all if the power supply does not provide enough power to the card. Some power supplies have multiple rails and can't give enough power even though the overall power is sufficient.) Unfortunately, if you have been using a video card, connecting the

If you are connecting the monitor to a laptop, make sure that the external video port is enabled. Some machines will have the port disabled to save power.

If this was the first time using the monitor, make sure that the computer was off when you connected the cable. Then turn on the monitor and select the appropriate input (if needed) before turning on the computer.

I hope this helps.

Cindy Wells

Jul 12, 2014 | Computers & Internet

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Power light blinking and no pic not even the "no signal", i'm pretty handy around components but still would like to know if it can be fixed .


Hi

Test it with a different power cable and with a different computer or laptop, to definitively isolate the fault.

The power light blinking indicates an internal power management problem.

Monitors, TVs etc. do not have a user repair friendly internal work environment. Even when disconnected from the mains, they contain large numbers of high capacity capacitors which store enough charge to seriously injure or even kill an inexperienced repairer.

Whether you attempt the repair yourself or take it to a technician, any repair will most likely involve replacing the power inversion unit, which will probably be expensive.

Monitors are inexpensive and normally have a long lifetime, so I would recommend buying a new one.

If you do opt to go down the repair route, a repair technician with lots of damaged monitors and monitor parts in stock may have a used component to replace the damaged part.

I hope this helps.

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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

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WHEN I BOOT IT UP-NO VIDEO EVERYTHING IS CONNECTED BUT I CAN'T SEE ANYTHING


When a monitor displays No Signal, it is an indication that there is no video signal going to the monitor.

The monitor is working fine.

1) Could be due to a bad monitor cable. They do go bad.

Test would be to take that monitor cable, (If it disconnects), and use it on a known to be working computer.

2) Could be the graphics of the computer.

If the computer has Integrated Graphics, the test would be to install a graphics card, and plug the monitor into it.

[Integrated Graphics is also termed as OnBoard Graphics.
On the motherBoard.

The GPU is the graphics 'engine' of a computer.
Graphics Processing Unit.

It can be soldered directly to the motherboard, (Integrated Graphics), or soldered to a removable graphics card.

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

When you install a graphics card, (graphics expansion card), the Integrated Graphics is bypassed.
The monitor plugs into the graphics card, not the motherboard.

Could be wrong, but I'll bet it's the Power Supply.

If this problem directly relates to a Compaq Presario SR1550NX, the computer is 5 years old. (According to my sources)

If the computer isn't cleaned inside, and the Power Supply isn't cleaned inside, on a regular basis as needed, the Power Supply is one hardware component that is sure to fail.

It's the top problem relating to computer failure.

The cooling components for a power supply is it's fan, and Heatsink's that are used inside.

1) http://en.wikipedia.org/wiki/Switched-mode_power_supply

2) http://en.wikipedia.org/wiki/File:ATX_power_supply_interior-1000px_transparent.png

The basic physical makeup of a Heatsink is a flat plate of metal, with tall, thin fins protruding from it.

The flat plate absorbs heat from whatever it is placed against, and the tall, thin fins absorb the heat from the plate.
The fins then radiate the heat away.

If there is a fan used along with a Heatsink, (Such as in the Power Supply, or on a Processor), the fan moves air in-between the fins, and around the fins, helping to carry the heat away.

If dirt, dust, hair, etc. is clogged on the fan blades, center hub, and surrounding cage, the cooling capacity drops tremendously.

The fan cannot move the needed amount of air.

To include on the Heatsink/s inside the Power Supply.

The gunk acts like an insulating blanket, causing the Heatsink to retain the heat, not conduct it away.

Heat = Wasted Energy

The Power Supply tries to keep up with the call for power, and eventually cannot, due to hardware components failing inside.

The Power Supply may seem like it is operating okay.

Lights light, fans spin, and it may sound as though the Harddrive inside is operating.

The Power Supply could have a weak Voltage power rail.

Power Supply's are rated in Wattage.
1) ALL the lights use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts.
3) A typical Processor can use anywhere from 51 to 125 Watts.

A bad Power Supply with a weak Voltage power rail, will have enough power to light lights, and maybe spin fans, but not enough power to turn the Processor on.

Harddrive sounds like it is working, because the Platters inside are being spun by the Spindle motor.

http://computer.howstuffworks.com/hard-disk.htm

There is no Processor operating (The 'Brain') to find the boot sector on the Harddrive.
Platters are spinning but the Arms aren't moving the Read/Write heads across the Platters.

In short the computer is not operating.

No video signal to the monitor, because there is no computer operating to send a video signal.
Bad Power Supply.

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1 Answer

Lenovo j3000 no video is it the mother board


1) Check the monitor cable first.

Use it on another computer, if available. Also try the other monitor, and monitor cable, on your computer. Rule out whether it may be the monitor, or monitor cable.

2) It's a Lenovo 3000 desktop computer, and one of the J series, apparently.
Which one of the J series is it? Just two examples, J110, and J115.

The Lenovo 3000 series desktop computers come with Integrated Graphics.
This means the GPU is soldered to the motherboard.

[GPU = Graphics Processing Unit.

If the GPU is soldered to the motherboard, it is Integrated Graphics, or also known as OnBoard graphics.
ON the motherBOARD.

A GPU can also be soldered to an adapter card.
Graphics adapter card, or usually just referred to as Graphics Card.

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

Let's say the Onboard (Integrated) graphics GPU, is bad on the motherboard.

The Lenovo 3000 series desktop computers, have a PCI Express x16 slot on the motherboard, which is used for a graphics card.

GPU is bad on motherboard? Install a graphics card.
Plug the monitor into the graphics card.

(Don't forget to install the drivers off of the CD that comes with the graphics card, First.
Then install the graphics card)

3) Let's also go back for a moment.

No video on the monitor, (Or also can be said as no graphics on the monitor. No Signal), can also be attributed to the fact, that the computer is Not working.

It may seem as though the computer IS working, however.

Lights may come on. Fans may spin, and it may sound as though the Harddrive is operating.

Problem is the Processor isn't operating.

The power of a Power supply is generally rated in Maximum Wattage.
(Voltage times Amperage = Wattage)

[There is one more power factor to consider, when stating the maximum power rating of a power supply.
The Amperage of the volatge power rails, but we don't need to concern ourselves with this at the moment.]

1) ALL the lights use Less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use up to, 51 to 125 Watts.
Depends on what Processor it is.

Using the Lenovo 3000 J115 7387 desktop computer for an example, the standard Processor that comes with it is an AMD Athlon 64 X2 4200+ processor.
(AMD Athlon 64 X2 4200+)

The AMD Athlon 64 X2 4200+ processor, can use up to 89 Watts.

http://en.wikipedia.org/wiki/List_of_AMD_Athlon_64_microprocessors#.22Manchester.22_.28E4.2C_90_nm.29_2

(TDP)

No Processor running, No computer.
No computer, No graphics on the monitor (Video)

[The Processor is the 'Brain' of the computer.
No Brain, there is nothing to find the boot sector on the Harddrive.
The Harddrive spindle motor just spins the Platters inside the Harddrive]

To summerize:
The Power Supply may have a weak Voltage power rail, and not have enough power to turn the Processor on.
Just enough power to run the hardware components, that do not use very much.

You can test the Power Supply, or replace it with a KNOWN to be good Power Supply that is compatible, for a test.

Should you wish to test the Power Supply you will need a multimeter, or a power supply tester.

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1 Answer

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Make sure you plug in any auxiliary power cables are are required for the video card.

Is the card used. Has it ever shown signs of life?

Go into windows via integrated graphics and install the latest drivers.

After that I would go into your bios with integrated graphics and turn off intergrated graphics. Look around if there's like a setting that's like switch to PCIx graphics or something. After the restart try to use your monitor though your video card.

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1 Answer

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Monitor screen turns off new monitor new video card had problem


If you've replaced the monitor with a new one, it's probably not a monitor problem. Try uninstalling the video card and use the motherboard's on-board video. If that's not working, check into getting a new motherboard. If it works fine, check the settings on your video card.

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