Unpluged from tower to fix tower and plugged it back in and computer can't read it

Make sure the power is being supplied from a working source, then check if the switch on the bottom-back of the computer is switched on. If the power button still doesn't work, try holding the button down for 10 seconds. Next, try switching the switch off, unplugging the computer for at least 30 seconds, plugging it back in, switching the switch back on, and pressing the button.

Make sure the tower is getting power. There will be a green light on the back of the tower where the power cord goes. Make sure the cord is snug and that it is securely plugged in to your power source - I'm hoping it is a power surge strip and in which case, make sure the surge strip didn't get unplugged or turned off. If you have it plugged directly in to the wall then make sure that outlet has power by plugging something else in to it that you know works. After doing all of this, make check to see if there is a light on the back of your pc. If not, unplug the power from the back of the tower, wait 30 seconds at least, and then plug it back in. Hit the power button on the front just once, if it doesn't power up, press and hold the button in for a 2 seconds and release. If that doesn't work, your power supply may have gone bad. That happens from time to time. Good luck, hope this helps!

The Acer Aspire L100 is a desktop computer powered by a special DC adapter and power cable. The computer's motherboard incorporates a fuse designed to prevent any power surges from damaging the computer. If the fuse burns out due to a power surge or for any other reason, the computer will no longer function. You can check the motherboard fuse for damage yourself, then take it to a trained technician for replacement if needed

Shut down the Acer Aspire L100 and turn the tower around.

Press the "On/Off" button on the front of the tower. If the computer will not boot and the fan does not turn on, the fuse may be burned out.

Unplug the power cord from the rear of the tower

Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.

Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack

Let me know if this helped..

2 Press the "On/Off" button on the front of the tower. If the computer will not boot and the fan does not turn on, the fuse may be burned out.

3 Unplug the power cord from the rear of the tower.

4 Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.

5 Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack.

Read more: Fuse Location on Acer Aspire L100 ' eHow.co.uk http://www.ehow.co.uk/how_7815704_fuse-location-acer-aspire-l100.html#ixzz1XUVwmxuA

3 Unplug the power cord from the rear of the tower.

4 Turn the tower on its side and remove the Phillips-head screws connecting the back panel to the Aspire L100's cabinet.

5 Pull out the motherboard assembly gently from the back of the cabinet. The internal fuse is located on the motherboard behind the DC power jack, which is to the right of the monitor jack.

Read more: Fuse Location on Acer Aspire L100 ' eHow.co.uk http://www.ehow.co.uk/how_7815704_fuse-location-acer-aspire-l100.html#ixzz1XUVwmxuA

Well, open the tower-after you shut down and unplugged your system-see where your burner is-unplug cables-turn on your system. Check is burner on the showing. If not power down and connect cables.Go and check it again. It should be OK now.Good luck!

I love this one. I've actually done this many times before and have been successful.

1. Turn the computer off and unplug the power cord from the back of the tower.

2. Press and hold the power button for about 3 seconds while the computer is unplugged (this drains the remaining power from the capacitors on the motherboard).

3. Plug the computer back in and turn it on.

If that does not work, follow steps 1 and 2 again, but this time:

3. Open the computer while it is unplugged and unplug the power supply from the motherboard then hold down the power button again for 3 seconds. (You may also want to take the RAM out and put in back in)

4. Plug everything back in and turn the computer on.

Possible that it's caused by a faulty hardware

1. Remove all the connection at the back of your computer
2. Power cycle your computer tower by pressing the power button for 15 seconds
3. Plug the power cord back in and monitor cable at the back of your computer tower (if it turned on, meaning that one of the device plugged at the back of your computer is the one's causing the problem, for you to pin point the problem, try plugging it one-by-one and turn on the computer each time you plug a device)
4. If it keeps on doing that, open up your computer tower (be careful to unplug the power cord and power cycle it to avoid static electricity)
5. Reseat the video card, turn on the computer again, if it's still occurring
6. Reseat the IDE/Sata cable of your hard drive and try to make sure it's properly plugged in, turn on the computer again, if it's still occurring
7. Reseat the memory, turn on the computer and test it again if the same thing
8. If you have 2 memory chip inserted in your computer tower memory slot, remove the other one and turn on the computer, do the same thing to other memory and each slot
9. Reseat the CPU and start the computer.

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.

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

The system will turn off if you hold down the power button for 10 secs. Can you check if other monitors work fine with this system?? (my best guess is - NO) since this monitor works well with other systems, the monitor being a failure is ruled out. So this boils down to a system failure & not a failed monitor. Worst case scenario this one must be a Motherboard & Power supply issue.