I have an ASUS Eee PC 900HA laptop that was given to me - unfortunately the charger broke.

I replaced it with a charger for a HP Mini laptop that had the right size connector - initially it seemed to work but then turned off. When I tried to turn it back on, each time it would only turn on for a second and then turn off again. I tried a Targus universal charger which seemed to charge for a second, but then nothing - the light wasn't even turned on.

Any ideas how to work around this?


In the rear of the charger there will be a set of numbers.

One of them will be the model number. Google for this number and you should be able to find a supplier to buy a new power supply.

Alternatively, there are 3 things you need to know in order to use another power supply:

  1. The plug style. This has to match exactly. If you have to force it in then you will end up damaging your motherboard.
  2. The voltage. This has to match. Using a power supply that provides too much voltage will blow up the computer. Using one that doesn't provide enough will just plain not work.
  3. The amperage. The power supply has to provide at least as much current as the old power supply. It doesn't matter if it can provide more - if anything that's a good thing. If it can't provide enough then there is a chance that the computer will blow the power supply.

By just plugging any old power supply and hoping one of either 2 or 3 may already have happened.

  • its unlikely, but i'd add checking the polarity of the inner/outer connections to that. – Journeyman Geek May 1 '11 at 14:07

Take note of answer 2 above. Just because the plug fits does not mean it is the correct size - the internal hole could be a little big.

Two solutions:

  1. Often when powered externally a laptop screen will be a little brighter. While the machine is on waggle the connector and fix it in the position that has the bright screen.

  2. Buy an adaptor. In the UK, Maplin supply a number of these.

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