Tip & How-To about Computers & Internet

Simple steps to diagnose a laptop that won''t turn on.

1.The first thing you want to check is your laptop's ac adapter or "power brick". They often have a little green light that will let you know if they are functioning. If the light is not on then you may need a replacement. If this is the case i recommend a genuine replacement from the laptops manufacturer. Universal adapters are overpriced and not always the same voltage and amp. This can lead to all kinds of other issues.

2. Check to see if your memory or ram may be faulty. With the laptop battery and power brick removed place the system bottom up (make sure you are ground by touching a piece of metal) and unscrew the square compartment. Inside you should see one or two rectangular chips. This is the system's memory. If you have two chips try alternating to diagnose if one may be bad. If you only have one memory stick try to obtain a known-good chip of the same type (ddr, ddr2, sd-ram) to test.

3. See if where the ac adapter plugs in is loose. If you have had to wiggle the connection to get the system to turn on in the past then you may have a bad dc jack. This is a very high risk repair that wouldn’t be recommended for the novice. It involves soldering and taking the laptop completely apart. IF you are uncomfortable with the idea of this then you should most likely consult a technician who can do it for you.

4. The most over-used phrase in regards to computers: “bad motherboard” sometimes it really happens and this behavior can be a symptom.


To help prolong the life of a laptop and its battery be advised of the following:

a.Leaving a laptop docked to an ac outlet with the battery in WILL ultimately kill the battery. Remove the battery from the system if it has a full charge.

b.NEVER move a laptop with the ac adapter still plugged in. Even if it is just a couple of feet. This can quickly lead to a damaged dc jack.

c. Be weary of high traffic areas so that someone doesn’t trip over the cable and rip it from the jack.


just a couple of tips hope this helps :)

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2 Answers

Power light turns green then shuts off in 1 second or less


Check that the computer is plugged in with power. (is the power bar actually on?, the power cord lpugged into the brick? plugged into the back of the computer? Is teh power port loose/broken?)

Mar 17, 2011 | Acer Aspire One PC Notebook

1 Answer

i have no led light on my e1705 when i press it and nothing comes on


Things to check:
1. AC adapter cord, esp close to the brick. Does the green light come on the brick? If not, replace the adapter.
2. Reseat battery. Check the battery charge by depressing the battery indicator button on the battery. Does it have a good charge? If so, then it could be the connection to the mother board causing the issue. If not, then replace the battery.
3. If both the battery is good and the AC adapter is good then you are looking at a mother board issue.

May 21, 2010 | Dell Inspiron E1705 Notebook

2 Answers

green light on ac charger goes out when i plug it in to lap top


This indicates a short in the computer or power supply. The power supply senses the problem and shuts itself off. Does the laptop run at all? More info. is needed to correctly solve your problem. Send me a message and I will help you out. Phil

Dec 09, 2009 | Dell Inspiron 1501 Notebook

1 Answer

Battery has gone dead. When I plug the A/C cord in the light on the charger immediately goes out and won't charge battery.


try connecting ac adapter alone without the laptop, check if ac adapter light will stay green or blue.
try another power outlet using the ac adapter alone without the laptop check if the ac adapter light will stay as green or blue. if all fails replace ac adapter.

if ac adapter stays green or blue try connecting to the laptop without the batt, check if the ac adapter light will stay on, if yes then try connecting ac adapter to laptop with the batt plugin check if the light stays green. if not update the BIOS. if fails replace motherboard.

Oct 12, 2009 | Dell Latitude D610 Notebook

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