My new motherboard will not recognize the AC adapter. solutions???

Hey guys,

So I got this new motherboard in, and it looks to be in ok shape. However, when I went to boot up it told me my ac adapter is not compatible. SO i removed that notice on the bios, however, I tested to see if it was being serious and removed the battery with the ac plug in and shutdown and wont turn on without the battery. Wierd thing is it will still say that when I only have the battery installed. I think my battery is dead now becasue it wont even turn on now. I checked the connections internally on the motherboard with a multimeter and sall good voltage both on the connections and through my ac adapter. This is the same one that I used before the motherboard fired so I know it works. I have two mother boards, one with a bad bios and the other with a bad charging system I supose.

So I either swap the bios chip off the new MB to the old, or I swap the charging system to the new MB. Or option c I send it back to get a new one. I just dont want to do that because I had to wait 3 weeks just to get this one. if I RMA it I know I will have to wait another month or two..... hmmmm choices.

 

If you think I should just get some good flux and a heat gun and swap the Bios. Then I am down.. buuuutttt were is the bios chip. I located the bios battery and there are two chips close to it, I dont know which one is the right one cause they are both 8 pin

 

Oh yeah, I allready looked this up, and The solders on the dc adapter are fine, and I did try to power cycle the MB buy pressing the power button for 30 seconds with no bios battery or anything.

 

So I guess out of a 102 people, noone has a tiny clue as to what the freak may be going on?????? this is so retarded. I waited 3 weeks to get this motherboard, when it arrives I throw it together, power up to get this AC adapter not recognized. Even when the ac adapter isnt plugged in. So i assume its an error on the MB? right? no maybe? Also the power tab on the bios says nothing is pluged in for ac source... so yeah.... I dont know what to do. RMA it and hope this dusche bag dealer gives me my money back timely??? I donno, anyway (end rant) thanks for you guys giving me most the knowledge I need to know, my comp is just a very expensive paper weight at the moment, and I am quite pissed about that.

 

could you post the specs of the machine?

and just for testing purposes you could try and hook up the adapter to a dell laptop from a friend.
then you will be able to see if the charger is good.(the id-chip in the adapter needs to communicate between adapter and motherboard)
otherwise you will might send a good motherboard away.

 

Its a m17x r2 the ac adapter is pushing 19.5v (cgecked with a multimeter) and it is a dell adapter as it has the blue ring. The board has power to the solders on the board through the dc jack however no power is detected to the bios. It only runs on battery. It has the a10 bios, and the video card is a 7970m. I took the ac jack to the computer repair shop and asked to see if it works, they pluged it in and it works fine. I also used a diffrent ac adapter to no success.

Also this ac adapter was working perfectly fine with the old motherboard , untill the bios was corrupted.

 

Try and enter the bios (hit f2 on boot) and check the power tab.
If it doesn't show the wattage.
Then it's probably the motherboard.

 

AW motherboards are finicky when it comes to their power supply requirements. Having it work on the old one in no way guarantees it'll function correctly, and if you're running a 7970 card now, your power requirements and regulation is going to be much different than with a more traditional configuration. I've ran across issues in the "handshake" between the power brick and the motherboard in order to engage the Nvidia card, sticking it in throttled-down safe mode.

And definitely post specs. I'd like to see what the stats are on this Frankenstein, if nothing else.

 

Try the suggestions here and here.
Some say that the socket (Female) where the power supply plug (male) inserts is known to have bad solder and can break. Inspect this area carefully for any damage and remember all power off when doing these repairs including battery removed from the notebook.

Good luck.

 

Thanks for all your replys the bios does not recognize the power supply at all. No poer no wattage nothing. The battery died and now i cant turn on the computer. I checked tha solders on the jack its fine it gets powrr to the board. The bios just doesnt pick up the power at all like as if the ac adapter isnt plugged in. The specs on the laptop are

M17xr2
Win 7 64bit
I7 740qm (soon to be 920xm)
8 gb 1333 ram
7970M dell chipset
Brand new keyboard
And the rest is stock.

I dont know if its the video card because it wont even boot to windows. It dies before that.

 

oke thats good to know,
did you ever read/heard about the psu id chip dell puts in chargers?
if not i would suggest to try and read up on it.
to sum up:

dell puts small chips inside chargers that communicate between charger and laptop.
its a small ''signal'' which gets carried through the center pin on the charger.
if you were to use a non dell charger which doesnt have the chip.
your laptop will not charge.
this also causes a lot of troubles for many of us.


now to the bad news.
its probably the motherboard and to be specific....the solder connection of the dcjack's centre pin.
you did measure the voltages but did you check the centre pin.

after all this i would ask for a replacement

 

Hmm, not something i really tried. Do you think that is what it is then. That wouod explain the reason why it would say non supported ac adapter. When the ac adapter wasnt even plugged in. Well i got a RMA for the motherboard, and already orered a new on from a duffrent supplier considering this one clearly said in an email. " thats a good board and it cannot be accuratl tested with a multimeter. I will giveyou your money back but will not send you a new one" . Yeah he doesnt understand customer service. Ill post an update when the new board arrives.

P.s. im orry for typing errors, due to not having a computer, i unfortunately have to write you guys on a cell phone, whuch happens to really suck for spellung and grammar.

P.s.s. NEVER order from partsguy.net computer world assets or golaptopparts.com they all are a single man who orders the parts after you place your order from china, they then ship it to you after getting it and it takes about a month. On top of that they treat you like your stupid and its like pulling teeth to get information from them.

Thank you guys for all the support and info. I even made a video of me putting this together, however i wont put it up consideribg the mb was a bad.

 

So,
Got a new motherboard in. And it did the same thing, no ac adapter shown on the bios , not charging, and computer will only run off battery. Did some looking aroubd, and I whent ahead and bought a new ac adapter. I have this slim delta ac adapter, and after finding another one with the same part number it turns out its a 150w adapter. So I assume it definetly not enough juice for my computer, so i bought a new 240w adapter.

Crossing my fingers that i didnt get a bad board again.

 

I would've said it's a faulty adapter if it says unsupported from the offset - there is no way a 150w is sufficient for the R2, you should be using a 240W PA-9E adapter.
I would doubt that the first board you had was faulty either - yes the solder connection on the centre pin has been known to fail but it is unlikely on a purchased board.

 

Well,

I am at a loss. Got my new AC adapter in the mail today. Keep in mind this motherboard I got about a week ago and has the A10 bios in it.

When I plugged it in, the blue light is on, and the center pin isn't damaged. I don't have a keyboard in the computer at the moment for the old one is broken. (still awaiting its arrival.)So I boot up and the bios still does not detect the wattage in the bios. Nor does it recognize the AC adapter to be a dell one. Again will not charge, will not recognize the AC adapter and will only run off battery power. I don't know what to do now, other then wait for the keyboard and hope that has something to do with it. But I assume its not a part of the power board, so yeah. Anyone have any ideal, this is the second board I have ran through, and its just not accepting power, New ac adapter, and the Dc jack does not have wiggle room in it, so its not like the solders are broke. I don't know I'm kinda at a loss.

 

My r2 won't boot without the keyboard ribbon cable plugged in

 

Did the adapter come from ebay? If so don't rule out the adapter being faulty!

 

Same here on the R1. I had a keyboard issue and tried booting it without the keyboard ribbon being in place; no dice. It also then tried to tell me I had failed at overclocking the processor. :thumbsup: The best rule of thumb I can offer is that you should make sure ALL parts are good before putting them in. Putting in parts that aren't supposed to be in there can cause other things to go wrong, so my advice is to return/exchange everything you possibly can, then try from scratch.

Also, having a 7970 in there is really about at the upper limits at what that machine can handle. Be sure your power supply issues are in order with an AC adapter that's going to handle the load. Start as fresh as you can, cross your fingers and good luck.

 

So after two motherboards, a new ac adapter (which i needed) it turns out to be the dang new keyboard i put in. It was faulty from the start and prevebted a charge. I replaced it and tada it works. Charges plays on both ac and battery and everything. Im so happy its retarded.

Thank you guys for all your time, input, and knowledge . Its been fun, but now im going to enjoy my new beefy rig.