Question about HP Compaq nx7300 Notebook

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New mother board installed and new battery still does not recongize battery. Must run with Ac adapter all the time.

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Its obvious the problem is in the power supply of the laptop or the Dc controller, board and battery has nothing to do with that part.

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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1 Answer

My cumpter t400 battery not detected what can be the cause


Lenovo Thinkpad T400 battery

its fully charged but computer cant find it .?
worth a try

Unplug AC adapter and Shutdown the system. Remove battery, Connect AC Adapter and Start windows.
look around device manager under the battery tab.
Shutdown, Remove AC Adapter, Install battery,
Reattach AC Adapter. Now, Power up and check.

check in settings and battery power etc
at worst
could turn out to be a mother board issue

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Sager 8880 wont run on ac adapter or charge battery, has new battery and ac adapter it does work with battery but now the battery is almost completely discharged and now i get battery light blinking and...


Hi Kenneth,
Have you checked to see if the charge connector on the laptop is loose when you plug the charger into it? You can see if it is by plugging it in and wiggle it around a bit. The charge light on the laptop might stop blinking if its moved and contact is made.

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Compaq nc8000 won't start please i wont to know the problem on the mother board after swicth on it will go off after 4 second and it wil not even show anything on the screen and the fan too will go off.


It could very likely be the motherboard causing the problem, in which case you're best off just getting a new computer rather than replacing or repairing the board, but it could also be a power issue.

Try turning the computer on with the battery installed and the AC adapter disconnected, and then try it with the AC adapter connected and the battery removed -- does it show the same symptoms both times?

Jun 08, 2010 | HP Compaq Business nc8000 Notebook

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Motherboard,It just went, burnt, for no reason,I sent it


Usually a "fried" motherboard will result from a faulty AC adapter / power supply. If the voltage it provides is too high, kiss the motherboard good bye! Most adapters output voltages around 18-19 volts at around 90 watts. If the adapter malfunctions, the voltages do not have to go much above the range to cause havoc.

If the repair shop did not FIRST check the voltage of the AC adapter before plugging it into a new motherboard, I would seriously consider a new repair shop!

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1 Answer

A few months ago my Dell Vostro 1500 laptop started saying that my battery could not be detected. I bought this laptop new in October 2007 and did not extend my warranty. I bought a new battery and...


Normally the message means that the battery is bad and needs to be replaced. There is a chance the new battery you got was defective and went bad before its time.

The motherboard can be the problem, although it is not common for this to be the case.

I would try one more battery before thinking about a new motherboard, a new battery is under a $100 where a new mobo is several hundred, and usually this is a sign of a bad battery. If you disconnect the ac adapter and it stays on then it is using the battery, although it is reporting that it cannot see a charge. I would guess the battery malfunctioned and is not being able to be read by the laptop.

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Dell xps m1210 won't power up with new battery. Check notes.


If it is working fine with a fresh battery then it is not a motherboard problem. It is either a bad ac adapter jack on the motherboard or the actual ac adapter cord is not working. Try cables2go.com as they have replacement ac adapters for almost everything under the sun. Hope this helps.

Jul 10, 2009 | Computers & Internet

1 Answer

Laptop won't power up dies in the middle of movie-won't power up


You would probably be better off buying a new notebook. Not sure how tecnologically advanced you are but it seems you already did the troubleshooting yourself. But i am very interested in the a/c adaptor output. If the led on the adaptor is green that just means that it is getting power from the wall.

What did you mean by fluid leaking out?

It could be the mobo (motherboard) or it could be the connections from the power to the machine. If you want to put a new mobo in I have to warn you that taking apart a laptop is VERY difficult and I do not recommend this unless you are a PRO. This is just about the only link i can find to buy a new board. If you google your laptop model you will find out you definately are not alone with this problem

http://www.notebooksolutions.ca/zc/index.php?main_page=product_info&products_id=1183

Please don't forget to rate my response and let me know if there is anything else I can help you with.

Jan 08, 2009 | Computers & Internet

1 Answer

Laptop does not work with AC adaptor, does not charge. Mother board issue


You may be able to get a battery charger but its rare.

If you do wish to use the AC adapter, take care with positive and negative. Also the voltage of the battery is actually lower than the AC adapter in order to get charged. I don't know what is going to happen if you do choose to use AC adapter as battery. 75% chance that it will work.

Good luck!

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Computer won't acknowledge power souce - shuts down


Try taking the battery completely out and see if it works then.

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