Question about ASUS Intel 5000P Chipset...

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PC won't power on

Hi,
Whenever I try to power on my desktop computer, the led lights and fan inside turn on for less than a second and go off again.

Any ideas what could be wrong? I tried changing the RAM e.t.c. but to no avail.

The motherboard is asus a7v266-e

Posted by on

  • dreamthedrea Aug 02, 2009

    It was working fine before I changed the DVD drive today.

  • dreamthedrea Aug 03, 2009

    Turns out the PSU was faulty, had it changed today.

    Thanks for your help though =)

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1 Answer

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  • Master
  • 2,559 Answers

Try this,Unplug the power cord and hold the power button for 30-45 seconds,plug back in and start computer,if it fails to start,you may have a bad processor.

Posted on Aug 02, 2009

  • Randy Hough
    Randy Hough Aug 03, 2009

    If that is the case,check the jumpers on the back of the dvd rom and set to slave or cable select and not master

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2 Answers

Power indicator light is on but will not run, fan turns off and on randomly


It sounds like the power supply in your computer has gone bad. Thats the box you plug the power cable into in the back of the computer. It looks like you should be able to get a standard ATX power supply and replace it.. or have someone do it for you. You can get one for no more than $50, sometimes less.

Dec 25, 2012 | Acer Veriton M661 PC Desktop

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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

E-machine modem wont turn on the fan and little yellow light on bottom are on


This is not a full solution, it is a partial solution, and something I would like you to try;

1) Unplug the computer from power.
2) Press, and hold the Power On button in for a count of at least 5 seconds.
Let go of the Power On button.

Perform this procedure 2 more times.

3) Plug the computer back into power. WAIT 1 minute, turn the computer on.

If the computer doesn't turn on you have a bad Power Supply.

Weak voltage power rail

Computer may have enough power to light LED lights, and perhaps spin fans, but not enough power to turn the Processor on.

A) If ALL of the LED lights were on at once, they would use less than 1 Watt of power.

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

3) A typical Processor can use from 51 to 125 Watts of power.
Maximum power consumption will depend on what Processor it is.

So you see a Power Supply with a weak voltage power rail, will have enough power to light LED lights, and perhaps spin fans, but not enough power to turn the Processor on.

[ You press the Power On button.
The first chipset on the motherboard to receive power, is the BIOS chipset. { Basic Input/Output System}

BIOS looks to see what devices are installed, does a Ram Memory count, turns the Processor on, then hands the computer over to the Operating System.

{Windows XP and Windows 7, are but two examples of an O/S }

I do not see what model number of eMachines you have, listed here.
If it is Not one of the slimline models, you may want to try swapping the Power Supply with a KNOWN to be good one.

I post this with the thought in mind, that there may be an unused desktop computer around, and perhaps you could borrow it's Power Supply for a test unit.

This may sound far fetched, as far as having a spare working desktop computer around, but I have had a reply from a poster who stated their relative had one.

If the Power Supply works, you know what the problem is, and how to solve it. Replace the Power Supply.

Replacing a Power Supply in a desktop computer may seem daunting, if you have never performed this procedure before.
It really isn't.

I can guide you on here, and add links which I believe may be beneficial.

Post back in a Comment.

Regards,
joecoolvette

Jan 03, 2012 | E-Machines eMachines Desktop PC

1 Answer

Have a e machine fan runs but connect monitor to another computer it works. smell a burning smell when turn on pc. Got it to come up once by unplug power hold on button 45 seconds plug in and turn on came...


The smell is the Power Supply.

Typical example of a Power Supply not installed in a desktop computer,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4435072&CatId=106

[ NOTE*
This is not an example of a direct replacement Power Supply for your computer. I would need to know the Model Number of your eMachines to give exact information ]

Bad Power Supply. Weak voltage power rail. (Or rails. There are three main voltage power rails for a Power Supply used in an eMachines desktop computer)

Enough power to light LED lights, and apparently spin fans, but Not enough to turn the Processor on.

Watts = Voltage times Amperage.
One measurement used for measuring the maximum available power output, of a desktop Power Supply, (SMPS. Switched-Mode Power Supply), is to state the Maximum Wattage available.

Typical maximum Wattage available for a typical eMachines Power Supply, usually averages from 150 to 300Watts.

1) ALL of the LED lights on at one time, will use less than 1 Watt of power.

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

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

(Note* Intel Pentium II processors use less than 51 Watts)

Solution is to replace the Power Supply.
This isn't as hard as it 'sounds', if you have never performed this procedure before.
I know you can do it.

1) http://www.fonerbooks.com/r_power.htm

2) http://www.videojug.com/film/how-to-install-or-change-my-computers-power-supply

3) http://computer.howstuffworks.com/power-supply.htm

If you need guidance in replacing the Power Supply in a step by step for your eMachines, please post in a Comment. (Believe upper right of your page)

Should you also desire recommendations to compare for a Power Supply, I would be happy to provide them.

Regards,
joecoolvette

Dec 01, 2010 | E-Machines eMachines Desktop PC

1 Answer

My HP Pavilian a6750y tower when turned on fan runs , but no light on powere button and moniter is blank


Indicates you have a bad Power Supply, to me.
Weak voltage power rail.

1) ALL of the LED lights combined use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts
3) A typical Processor can use 51 to 125 Watts.
Depends on what Processor it is.

(The Pavilion a6750f uses an ATX power supply, that has a maximum rated wattage of 300 Watts.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01619697&lc=en&dlc=en&cc=ca&lang=en&product=3872428#N934

The AMD Phenom X4 9650 processor can use up to 95 Watts,

http://en.wikipedia.org/wiki/List_of_AMD_Phenom_microprocessors#.22Agena.22_.28B2_.26_B3.2C_65_nm.2C_quad-core.29

(In the chart under the heading TDP)

Enough power to spin fan's, but not enough to turn the Processor on.
Not enough to also light that Power On LED light.

No Processor operating = No Video Signal from the computer.
Hence the monitor is blank.
(No Signal)

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01356113&tmp_track_link=ot_recdoc/c01619697/en_ca/c01356113/loc:3&lc=en&dlc=en&cc=ca&lang=en&product=3872428

NOTE*
Computer unplugged from power.
Anti-Static Precautions observed.

Anti-Static Precautions:
Your body carries Static electricity.

Static will fry out (Short Circuit) the hardware components inside a computer.
(You may not even see it, or feel it)

Computer unplugged from power, computer case open, working on a table;
TOUCH the metal frame of the open computer case, to relieve your body of Static.
Should you leave your computer in the middle of working on it, upon your return be be SURE to Touch the metal frame again.

Oct 04, 2010 | HP Pavilion a6750f PC PC Desktop

1 Answer

The controller will not turn on. Green light on back comes on but when we turn on the unit, the fan starts briefly and then the power cuts off.


Bad Power Supply. Weak Voltage power rail.

Not enough power to turn the Processor on, and keep it on.

1) ALL those LED lights together, use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is. (Older Processors use less Wattage)

The Compaq Presario SR1810NX desktop computer, comes with an AMD Sempron 3200+, processor.

(Uses the Socket 939 processor socket)

[Maximum operating capability is a 1.8GigaHertz frequency rate.
1.8GHz

Giga = Approximately 1 Billion
Hertz stands for Cycles per Second.
Frequency Rate is correct computer speak for 'Speed'
The AMD Sempron 3200+ processor, can operate at a maximum frequency rate of 1.8 Billion Cycles per Second ]

HP Support >Compaq Presario SR1810NX desktop computer > Product Information > Product Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00609384&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=1841795&lang=en

The AMD Sempron 3200+, can use up to 62 Watts,

http://en.wikipedia.org/wiki/List_of_AMD_Sempron_microprocessors#.22Palermo.22_.28Socket_939.2C_E3_.26_E6.2C_90_nm.29

(Palermo Core)

When you press the plastic Power On button, you are contacting a Power On switch inside it.
(Typical ATX Power On switch,

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

When an ATX power supply is plugged into power, there is a 5 Volt Standby power, present inside the power supply.

Pressing the momentary contact power on switch, closes a circuit that directs the 5 Volt Standby power to 'excite' the power supply, and turn it on.

The first chip to receive power is the BIOS chip.
[Chip and Chipset are slang terms for I.C.
Integrated Circuit.
BIOS stands for Basic Input/Output System]

BIOS,

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

BIOS looks to see what devices are installed, does a Ram Memory count, TURNS the Processor on, and hands the computer over to the Operating System.
(Windows XP is one example of an O/S. Operating System)

The LED lights receive power, so do the fans, and the Harddrive. When it's time for the Processor to kick on, there isn't enough power, and the Power Supply 'falls to it's knees'.

Replace the Power Supply.
It's just one of the basic ATX power supply's that are readily available in a multitude of places.
The Wattage is 300 Watts.

The ATX form factor for this power supply, (Size and shape), is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall.

Power cables needed:
(Continued in a Comment)

Aug 02, 2010 | Compaq Presario SR1810NX Sempron 3200+ 1.8...

2 Answers

Computer wont turn on power light is yellow


Here is the Diagnostic LED information

http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Normally a solid Amber Power LED is a motherboard failure or a device attached to the motherboard (Expansion card or external device)

May 15, 2010 | Dell Inspiron 530 Desktop Computer

3 Answers

My Dell Dimension 4600 will not turn on. Steady Amber Light


Disconnect the Power cable / A/c adapter/Battery from computer.
Disconnect External peripherials.
Hold down the power button on the computer for 10 seconds.
Reconnect the power cable or A/c adapter and battery or the computer
Try to turn on the computer
check for Led's on the computer
If still no display ,shut down the computer,disconnect power cable.
Open the computer tower,remove memory modules,reconnect power cable and turn on the computer.If you get a beeping sound after turning on you should be getting beeping sound suggesting the mother board is not bad.Turn on the computer and disconnect power cable from computer.
Reseat 1 memory at a time if you have 2 memory module or if single memory module reseat in different memory slot,swap memory module.
Reconnect the power cable and turn on the computer if it boots to desktop possible issue with 1 of the memory module.
Disconnect the harddrive ide cable from the harddrive .Turn on the computer.
If still unable to power on .Shutdown the computer and disconnect power cable.Remove video card,sound card ,modem card if any .Connect just the vga cable from monitor to the integrated video port.
Connect power cable and turn on the computer.
If computer turns on possible issue with one of PCI or PCI express card.
If still unable to power on.Disconnect the power connector pin from the motherboard and reconnect it back.Turn on the computer check power power led on motherboard,also check if the processor fan is spinning. if no go then issue with motherboard.

Sep 03, 2009 | Dell Dimension 4600 PC Desktop

1 Answer

D530 CMT minttower power problem


Hi, from your description it appears your power supply is ok.

Remove your RAM chips, clean everything with a soft brush or a can of compressede air [from computer store] Reinstall the RAM making sure it is seated firmly.

If this does not solve the problem, Are you using 1 or 2 RAM sticks? if 2 then remove them again and swap them around.

stick one in dimm2 and stick 2 in dimm 1.

If you only have one stick then beg or borrow another stick and try it. If all fails you may have developed a mobo problem.

Regards mistyman

Oct 13, 2007 | Compaq d530 CMT PC Desktop

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