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My laptop screen won't turn on. the power lights are on and the fan is on. but every 2 minutes they switch off then turn back on

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It seems to be u have problem with RAM .Pls chage ur RAM witha new one and see if work ornot..

Posted on Nov 29, 2008

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No power when turned on - light green on back - no lights on motherboard - no fans


sunny,try with a other powersupply if possible.
faulty PSU are often the cause.

Jul 13, 2013 | HP Media Center m7250n (ED842AA) PC...

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How to troubleshoot an electrical brownout (computers)


<p>Modem router and switches <br /> <p>1. Plug the device into the outlet and see all the lights. Determine if they are all about how they should turn. <br /> <p><br /> <p>2. Disconnect the device from the device and allow to rest for five to 10 minutes you can Sun <br /> <p><br /> <p>3. Turn off the lights of the device into an outlet and a view of the screen to see where we are going. When you're gone, then the Brownout the unit is damaged and needs replacement. <br /> <p><br /> <p>Computer <br /> <p>1. Disconnect the computer from the electrical outlet and turn it so your back is turned. <br /> <p><br /> <p>2. Locate the AC adapter to the top of the PC, the rear fan. Near the fan and see if a burning smell. <br /> <p><br /> <p>3. Connect the power cable from the PC and turn on the computer. Hear the sound of the computer. If you do not hear and determine that there is a smell of burnt food, replace the power supply. <br /> <p><br /> <p>4. Open programs and working on the computer. Look to see that the freezing tissue damage your computer or network restart. <br /> <p><br /> <p>5. Listen to the fans to operate. If not the fan or the hard disc, that harm could be caused by a voltage drop. <br /> <p><br /> <p>6. Open your Internet browser and try online. If your computer is not connected to the Internet, and you're using a wired connection, unplug your computer and check the NIC light to see when it flashes. A light no flashing is an indication of a failed network card. Check the lights on the modem, router, switch and hub. If all lights are working, but the computer will not connect to the Internet, this means that the board brownouts wireless network or affected. You must replace the device failed. <br />

on Jun 22, 2011 | PC Desktops

1 Answer

Shortly after I turn my computer it turns off


How long is shortly? If it runs and brings up the Windows Desktop and you are allowed to work for 10 minutes or longer then it shuts down, most likely the laptop is overheating. One way to tell if it is overheating is to immediately try to turn it back on after it shuts off. If it will not boot back up, it's overheating. If you let it sit and cool off for a while, then try to boot it back up and it does it successfully, it's overheating.Causes of Overheating:1) Dust all inside the computer. Fans clogged with dust, dust around the vents.2) Fan not working3) The Thermal Past around the CPU has dried up or is too thin the keep the unit cool.When you plug in the power cord is there any lightswhatsoever on the laptop, where the plug goes in or on the AC Adapter of thepower cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

Mar 31, 2012 | Gateway PC Desktops

1 Answer

How to repair start-up on my computer


How long is shortly? If it runs and brings up the Windows Desktop and you are allowed to work for 10 minutes or longer then it shuts down, most likely the laptop is overheating. One way to tell if it is overheating is to immediately try to turn it back on after it shuts off. If it will not boot back up, it's overheating. If you let it sit and cool off for a while, then try to boot it back up and it does it successfully, it's overheating.Causes of Overheating:1) Dust all inside the computer. Fans clogged with dust, dust around the vents.2) Fan not working 3) The Thermal Past around the CPU has dried up or is too thin the keep the unit cool.When you plug in the power cord is there any lightswhatsoever on the laptop, where the plug goes in or on the AC Adapter of thepower cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

Mar 31, 2012 | Gateway PC Desktops

1 Answer

Compaq presario 56000cl won't boot up / red light flashing in the back.


When you press the power button do you hear the fan running, hear the disk drive running, see any lights, do you hear the cd drive click once and see the light come on briefly on the cd drive door? If you see all the aforementioned then it is surely trying to boot. Computers don't boot mainly because of the following problems. 1) Bad Power Cord or Power Supply. 2) Electro Static Buildup. 3) Bad Motherboard 4) Bad boot or system files.
Remove the Power Cord and the battery if it's a laptop. Press and Hold the Power Button for 30 Seconds. Then replace only the Power Cord and try hitting the Power Button. If it boots you had an Electro Static Buildup. If you have boot or system files that are missing or corrupt normally the system will be telling you that on an error message that appears on the screen. Does your system show you anything on the screen when you press the Power Button? If not you have a Power Supply or Motherboard issue.

Mar 18, 2012 | Compaq PC Desktops

1 Answer

The power went out here at work and my acer desktop wouldn't log into anything (ie email, internet) when the power came back on. So I clicked shut down and it turned off but now it won't turn back...


try taking out all peripherals like mouse printer keyboard leave screen pluggged n then press and hold the power button for 2 minutes then plug in your mouse and keyboard and see if it boots hope this helps

Sep 14, 2011 | Acer Aspire™ T180 PC Desktop

1 Answer

Screen goes black after 30 mins of working.


There are a few things you need to check here.
1. It could be that your computer power management is set to turn your monitor and harddrive off after 30 to 45 min.

If the computer is however working for 30 to 45 min while you doing stuff and it shuts off, the there is an internal problem "Hardware"

I would suggest you check to see if the power management is set to turn off monitor 30 min and harddrive after 45 min. IF that is not so, then we go on to the next test.

It could possibly be your processor fan is not working so once your processor gets over heated it shuts off the computer.

Turn off the computer, remove the case "this is only if you know what you are doing" with the case off, power on the computer and see if the processor fan is working.

You can get back to me and I can walk you through it.

Hope thiss help.

Aug 23, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Power button just flashes will no turn off AND nothing on the screen


On back of the computer is a on off switch for the power supply, or unplug the computer for one minute. Turn the switch back on, or plug the computer back in and try to turn it on.

Apr 20, 2009 | PC Desktops

1 Answer

HP dv6000, laptop will not start up, screen stays blank and the lights and fan turn off about every 20secs and it just keeps doing the same thing over and over again, sounds like its starting up then OFF,...


Hi civic-95-uk ,

Try performing power drain steps on thenotebook:

1) Remove the AC adapter and battery from the notebook.
2) Press the power button and hold it for a minute.
3) Reconnect the AC adapter, battery and try starting the computer.
Even if the issue is same then perform Hard drive self test from BIOS.

1. Turn on the notebook and press F10 immediately. Which will lead you to the BIOS setup screen.

2. Click on Diagnisis and choose hard drive self test. Perform both the short test and long test.


Sep 09, 2008 | HP PC Desktops

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