The power system in a notebook computer is much more complex than a desktop. Similarily, the troubleshooting steps in a notebook are more complex. The power system in a notebook consists of the battery, the external power adapter, the DC-DC board or charging board, VRM, power distribution array, and display panel HV board (a power component).
In this case you should first try a full reset. Remove the power adapter and remove the battery. Leave the unit for aobut 30 seconds to discharge. You may also do the manufacturer's described full-reset procedure. (For hp and compaq, this is holding the power button down for 60 to 90 seconds.) Reconnect only the external power adapter and turn on the notebook. The unit should now power up. Install the battery. Watch the charging lamps. If they do not light you may have a faulty battery or a the charging board is burned out. There are a few more procedures you can do with the battery and power states to do further troubleshooting of the battery or adapter or charging board faults. Diagnosis beyond this point is much more complex and is more specific to the model and make of your unit. --- In [email protected], "John" <[EMAIL PROTECTED]> wrote: > My laptop decided to quit working. It was on when I went in the other > room for supper and when I came back it was blank. It will not power > on with either the ac adapter or the battery. No lights whatsoever > come on. Personally, I think it is the internal power supply unit. > The symptoms are the same as a desktop that I had at one time. I would > think that if it is the power unit that the battery would not work > since it plugs into that unit. My question is, could there be anything > else that would cause these symptons such as if the CPU or motherboard > blew. I would think with problems with the mother board you would at > least get it to power on with errors and some lights would come on. > Any possible causes would be appreciated. I am trying to determine > whether it is worth trying to fix or just try to sell it piece by piece > on ebay. I have only had it a few months, but, it was used. > > John ------------------------ Yahoo! Groups Sponsor --------------------~--> <font face=arial size=-1><a href="http://us.ard.yahoo.com/SIG=12h638ave/M=362335.6886445.7839731.1510227/D=groups/S=1705115386:TM/Y=YAHOO/EXP=1123134772/A=2894361/R=0/SIG=13jmebhbo/*http://www.networkforgood.org/topics/education/digitaldivide/?source=YAHOO&cmpgn=GRP&RTP=http://groups.yahoo.com/";>In low income neighborhoods, 84% do not own computers. At Network for Good, help bridge the Digital Divide!</a>.</font> --------------------------------------------------------------------~-> If you have any questions or problems with any aspect of this site, please feel free to contact me directly [EMAIL PROTECTED] Please do not post personal issues directly to the group. To unsubscribe from this list, send an email to [EMAIL PROTECTED] Thank you for using A-1 Computer Tech Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/A-1-Computer_Tech/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
