Laptop will not turn on, mains adaptor box green led light flashs
Last week my Dell 8000 inspiron started to act up. Problem is that it
will not accept the mains charge as before. To explain; I always use my
laptop via the mains adapter and as it should the mains adapter box has
a solid green indicator light showing it is on and powering my laptop.
But last week without warning when I turned on my laptop the mains
adaptor box led light started flashing on and off. I have a spare mains
adaptor so tried it as well and the same thing, it flashes all the
time. Also tried a different power socket...but no difference. When I
turn on my computer it goes to battery power straight away and will not
take the mains feed.....Strange.....
When I pull out the mains lead from the back of my computer the light
on the mains adaptor box stops flashing but as soon as I connect it to
my laptop again it begins to flash. This has now resulted in my battery
being run down with no way of charging it or powering up my laptop with
Someone mentioned it might be a dud battery that is causing my laptop
not to either charge the battery or allow the laptop to be fed via the
mains adaptor lead
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Power getting to the laptop. Try first to see if this will give a screen image on an external monitor, listen for the sound of the cpu fan, hard drive and DVD rom drives clicking, see if the DVD rom drive will open if pressed.
Then remove battery and AC adaptor, press the power button for 30 secs, refit mains only and try this on mains supply (no battery)
If this fails to boot, check the light on the ac adaptor is a steady green, flashing green indicates power is not fully reaching the laptop (motherboard problems)
If it is steady and the LED power light on the laptop is steady, suspect the DC jack socket. If this feels loose or sloppy, it will need replacing, depending on the type fitted, it may be soldered onto the board, or a wired connector, which sometimes goes bad.
After that, I'd suggest that a capacitor has gone on the actual motherboard and you will need to strip the laptop to check it.
I'm assuming you are using a GENUINE Dell laptop charger designed for this model?
Check the end of the adaptor, if it is the type that has the centre pin, make sure it has not snapped off. Check the adaptor is putting out 20 volts DC by connecting a multimeter to the outer and inner parts of the DC jack.
Usually, the ac adaptor LED will flash green if there is no charge going to the laptop ("spitting back power"), however, a dead adaptor is often recognised by a lack of the lED light glowing
You can try with a universal adaptor, it will not charge the battery but at least will eliminate the charger or the charging circuit. If this also fails to power up the laptop, then the issue lies with damage to the motherboard
Just check the power connection from the AC going to your laptop if the power adaptor of your laptop are working. Note; you only know that the power adaptor was working if the LED (Light Emiting Diode) was light because the power adaptor are have the LED to see it that they are working normally. If the power adaptor working normally their was a problem of the power supply inside your laptop and need to be repair by the electronic service center. But if the power adaptor are not working the problem are in the power adaptor. I recommend that you replace your power adaptor and bring it to the computer store to check its type and model it is because only same type or model of that power adaptor to be replace.
We had the same problem. I figured out it was NOT the main battery, but the auxilary battery. The batter life WITH the auxiliary was 68% total, when I removed the 2nd battery the battery life shot back up to 98% AND the flashing orange / red lights were gone (both on the power source and off). I then replaced the auxiliary battery with a spar back up to make SURE that it was not a fluke and with the new backup battery firmly in place the lights still did not flash. Problem solved.
This is directly from the User Manual:
If the computer is connected to an electrical outlet, the Battery light operates as follows:
• Solid green: The battery is charging.
• Flashing green: The battery is almost fully charged.
If the computer is running on a battery, the light operates as follows:
• Off: The battery is adequately charged (or the computer is turned off).
• Flashing orange: The battery charge is low.
• Solid orange: The battery charge is critically low.
if its the battery with a press button that lights up 5 green lights.. if u hold it for about 6 seconds it should light up all or some in a row like 000.. ( depends on charge it has) after 6 seconds none should flash , they should turn off . if any do flash or led green are missing in between its likely a bad battery.