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The computer does not start up

The light on the tower goes on but the computer does not start up. What can I did to fix it?

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Release your harddisc drive. And switch ON your computer. Make sure first, you get to connect monitor computer to VGA card. Switch ON your monitor. Don't forget to get electricity to your monitor. You must see POST (Power On Self Test) progress. If your computer still not start up again, please you can see inside your CPU. Fan processor must running rotate. If running rotate, i will make a decision if your mainboard is BROKEN (if your VGA in onboard). Please claim it to your dealer....or VGA card in PCI slot is BROKEN.

Posted on Sep 07, 2009

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My P4B533 is not starting up anymore. Coolers are running, hard drive lights on, even Motherboard green light on. After start up the monitor goes on standby. Changed teh C-Mos battery but no luck.


its eather your fuse which no it your steal tower or aluminuim tower is not on chip on mother board when that chip gets hot it resets it self its a black chip and it has to be firmely tight on chip some has a coolent fan on it and some dont mother board has it seperated in 2 parts on some computers.

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Describe your dell dimension E521 wont boot and Problem my computer turns on but doesn't open it goes to a black screen with little flashing bar in top left corner nothing new was installed but there...


The 123 lights on tower translates as:

Routine system activity subsequent to video initialization.
Watch your monitor for on-screen messages.

Disconnect the video cable from the computer and see if you get floating color bars on display. If not, your monitor is defective.

Jan 10, 2011 | Dell Dimension E521 PC Desktop

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It was running fine and then all of a suddun its running rough, it wont shift over and the engine light is blinking.. its a custom 2001 buik century. we need to fix the car so we can get back and forfth to...


flashing engine light means engine misfire. let car idle and mist the plug wires down with water, rev the engine up and down and look for little sparks jumping from the wires. and arcing wires can cause problems. before changing any bad wires check the coil packs where the wires plug in the three small boxes on the top back of motor. they are three packs with two wires each. one pack at a time take the two wires off to reveal the coil towers. have an assistant start the motor and make sure the spark goes from tower to tower. repeat on remaining two packs. if the spark goes straight down the tower the coil needs replaced. if there is no spark, the coil needs replaced.

Sep 01, 2010 | Buick Century Cars & Trucks

1 Answer

When my computer is turned on green light is not display and the screen does not display anything than what should i do ??


If the green light is not glowing in the tower check the status of the light on the back of the tower where the power cable goes.
If there is no light in the back of the tower than it might be an issue with the wall jack or surge protector so try connecting the power cable to a different jack and see what happens. if it remains the same than try with a different power cable and check.

If the light is glowing on the back of the tower but there is no light in the front than it may happen the power supply of the pc might have failed. try to open the tower reseat the RAM cards, reseat the Harddrive cables as wells as try to reseat the cables of the power supply. if the light on the back flickers and goes away than it might be a faulty motherboard. So do a Motherboard test by turning on the pc without the RAM cards, if the motherboard is fine you will hear beeping noise if not than motherboard is faulty.

Aug 02, 2010 | Smart Modular SV3170A

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I have a dell optiplex sx280 computer and monitor that has lapsed into ''power save mode'' and I have been unable to ''awaken'' it (I'm not sure which is ''asleep'': the monitor or computer!) from sleep. I...


How's the status light of your computer monitor? is it blinking amber? and the status light of your computer tower's power button? blinking amber as well or solid green or no light at all?

1. Disconnect all the connection at the back of your computer tower
2. Press the power button of the computer tower for 15 seconds
3. Reconnect the power button and the monitor cable at the back of your computer tower and turn on the computer (if it turned on that means that one of the device plugged at the back of your computer tower is faulty)
4. If still the same problem, open up your computer tower.
5. Reseat the video card, Reseat Hard drive, Reseat Memory, Reseat CPU, Reseat power cord coming from the CPU to your computer (doing all things one-by-one to pin-point the root cause of the issue)

If none of the troubleshooting steps fixed the problem, possible that the power supply is faulty and if the power supply is faulty sometimes it goes with the motherboard.

Jan 08, 2010 | Dell OptiPlex SX280 PC Desktop

1 Answer

Cpu says no input vga signal, then goes to sleep


The no input VGA signal just means that the monitor is not receiving anything from the graphic card on the tower. Is the card a digital (DVI) output card? You'll know by the connector, it's white and slightly wider than a standard VGA connector. If so, perhaps the monitor is set to the wrong input?

If that isn't the case, and the computer is using an on-board or built-in graphics controller, you could try resetting the system's CMOS settings by setting the clear-settings jumper on the system board, or simply remove the plug and CMOS battery for a few minutes. Check the computer's documentation on the exact steps to do this.

Hope this helps!

May 19, 2009 | HP GX613AA Pavilion A6300F Desktop PC

1 Answer

Tower problems


You may need to replace the cmos battery, its a cr2032 3v button cell
Make sure all your expansion cards and memory are reseated.
Make sure all cables are reseated.
your power supply could be bad

If that doesn't work try this


Here is my fix for the dell dimension 4400 amber light problem. It works!
replace cmos battery.
then unplug power cord form wall about 5-10 secs.
then plug it back in, wait 5 secs.
If amber light comes on, press and hold power button until it goes out.

(with light out, press and hold power button while amber light comes on and goes off again holding power button 2-3 secs after light goes out.) repeat whats in parenthesis until computer turns on
it should only take about 6, 7 tries.

After the computer boots, you may want to setup cmos or boot into windows.
After you shutdown, unplug power cord for 5-10 secs then plug it back in.
Press and hold the power button, computer should come on.
I found that's the only way to turn on the computer.
If you shutdown and don't unplug power cord the computer may not boot, mine didn't.
Strange I'd say

A+ Technician

Apr 01, 2009 | HP Computers & Internet

1 Answer

No video


Try to check the light on the monitor. If it is amber, then check the video cable both from the back of the monitor and the tower. Try a known-good monitor. Check the diagnostic LEDS of the tower. There are four of them in the front panel. When the computer starts normally, the lights flash. After the computer starts, all four lights display solid green. If the computer malfunctions, the color and sequence of the lights identify the problem. If you have a solid green light on the tower, no beeps heard and no video, check the LEDS. If you get 2-4 light, a possible graphics card failure has occurred. If the computer has an external graphics card, open the tower, remove the card and put it back in. If still persist, try a known-good card. If it still does not resolve the problem, try reseating the memory cards. Remove and put it back in. If still no go. Then it's a motherboard problem.

Sep 16, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Black screen when i turn on computer.


Do a power drain :- Disconnect every cord from the back of computer tower while the pc is oiff and then press and hold down the power supply button in front of the tower..
have u tried updating the bios any time before?
Secondly,is it possible to go to the safe mode or the screen goes blank even before that?

Jun 27, 2008 | Compaq Presario SR1103WM-B (PC183B#ABA) PC...

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HP Pavilion meets monitor


I would fathom a guess that the motherboard has been damaged, if it is the PS then you can see by taking it into a service center to have the output checked 3 v 5 v 12 volt good luck.

May 26, 2008 | HP w19 19" LCD Monitor

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