Question about ASUS K52F Notebook

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New charger makes cursor jittery during use.

I had to replace the charger for my laptop. For some reason while using the touchpad in AC Mode now causes the cursor to become jittery and extremely inaccurate. I've read that a BIOS update fixes the problem but I cannot find any update for it, and no information on a driver update either.

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  • ASUS Master
  • 7,627 Answers

Try the sensitivity adjustment on your touchpad. I have never heard of a AC cord replacement doing that, will, you live and you learn, I suppose.

Posted on Nov 18, 2012

  • 12 more comments 
  • Vinnie Ferraro Nov 20, 2012

    I read a little bit about it from what i could find, and saw that bios could need to be updated to fix the issue. It just doesn't make sense to me that the touchpad is 100% fine while not plugged in. During charging it works here and there but while fully charged it's constantly jittering around when I'm trying to do something. This is my 3rd charger, and it started happening as soon as i started using this one.. I know it's odd and I've never seen it before either but I don't see what else it could be, I've tried all of the other solutions offered here

  • max carson
    max carson Nov 20, 2012

    As i'm sure you know the BIOS is like a minefield, one wrong step and........well you know. Have you searched the ASUS website for this issue, do they suggest a BIOS update? 3rd Charger? If you feel comfortable, and you get the BIOS update from ASUS website, usually computer manufacturers will put out updates/patches for issues like yours,It may be your answer. My advise is to only use ASUS WEBSITE BIOS Updates. Check and double check, and re-check the check before flashing the BIOS. As you know, it's almost impossible to put the toothpaste back in the tube!

  • Vinnie Ferraro Nov 21, 2012

    Yeah I've heard BIOS can be rough if you aren't sure what you're doing. I did a little bit of research and didn't find any type of update involving the problem I'm having, which is why I didn't go straight for the BIOS update. Probably less risky to spend the little bit on a new charger, specifically for my laptop rather than the "universal" one I have now that fits multiple laptops... maybe It's sending too much or too little power or whatnot, just doesn't make sense that it would work to charge it without some kind of error and having only the touchpad being a problem.. Don't understand what else it could be while it works fine without the charger and while I was using the old charger.

  • max carson
    max carson Nov 21, 2012

    Do you have multimeter to verify DC voltage output is correct at the plug in for laptop? Usually the universals have a switch you can change DC voltage output. I have a backup ac cord/charger like that. You said this is your 3rd. charger? Seems like a lot, AC issue or damaged? I have been working with computers a long time. There is an old saying, "Stranger things have happened". Have you looked or asked about this issue on a ASUS forum or help site? I would suspect someone somewhere has come across this issue. I haven't, sorry I can't help, but when you resolve the issue, I would be interested in the outcome.

  • Vinnie Ferraro Nov 21, 2012

    I think I may have one around somewhere, but I don't see a switch to change the DC output. Yes 3rd charger.. First one had the wire pull out of the stem on me, was old and moved it around more recklessly than not most of the time, and second one was eaten by a dog. I haven't checked into any ASUS forums as of now, as I came across this site while looking for a solution, and figured I'd give posting it a shot. Odd enough thing to have happen I'll admit though, I've never had or seen this type of problem before either, which makes it that much harder to fix!

  • max carson
    max carson Nov 21, 2012

    Dog ate my cord? That's a good one! As you know ,everything points to the Cord/charger I'm sure you matched the DC output of cord/charger to the input of the laptop. So ,the question is are the specs on the cord/charger correct? Did you purchase the cord/charger from a computer store?

  • Vinnie Ferraro Nov 21, 2012

    Haha typical excuse! Yeah, input on laptop is +19V -- 3.42A, 65W, whereas charger's output is 19V --- 3.42A/4.74A

  • Vinnie Ferraro Nov 21, 2012

    It's an ASUS K52F laptop, and the charger is model: 90W-ACI010, in case you were interested. I bought the charger online, rather cheap actually. Surprisingly cheap, which I guess is the "Surprise! Your mousepad won't work!"

  • max carson
    max carson Nov 21, 2012

    Yeah, I have learned, the hard way, "they are cheap for a reason". Laptop batteries for example. Without verifing the actual output voltage, you can't eliminate that possibility. Troubleshooting 101. Eliminate all the possibilities, and what ever is left.....

  • max carson
    max carson Nov 21, 2012

    I fried my universal on a laptop I was trying to repair that had some serious power issues, $50.00 up in smoke! Did you know electronics work on blue smoke? release the blue smoke and......

  • Vinnie Ferraro Nov 21, 2012

    Yeah.. Only way to really get the right one is to buy directly from the manufacturer of that brand laptop usually. Think i found this one for $20 or so? Maybe even less! At first I thought "what a great deal!" guess i deserved that one! Think after christmas I'll just have to buy another one and junk this one, as I get rather irritated when the laptop is dying and I'm still using it with the mouse bouncing around a little on me. Sucks when you're trying to click something like the address bar and you're clicking something on the menu bar instead! I'm about to post on the ASUS forums and try to find a solution, although I don't actually see a section in the forums relating to this type of issue.

  • max carson
    max carson Nov 22, 2012

    Are you using a USB Mouse? Or is the issue with the Touchpad? Have you tried a USB mouse? say a Logitech, mine is a http://www.amazon.com/gp/product/B003HC2... I know it doesn't solve your problem, but it would be another way to isolate the problem. Personally I dislike using a touchpad, I find it a pain, but that's just me.

  • Vinnie Ferraro Nov 23, 2012

    I haven't tried using a USB mouse, but there's one in house I'll have to give that a shot. I normally like using a mouse as well but most of the time I'm on the laptop I'm in bed and it's easier to just use the touchpad. I can't find anything about this anywhere, and was hoping someone would have heard something about it on here. Think the plan of attack is going to be buying a new charger, and if the problem continues I'll just return that one, and look further into this, but if it works I'll touch base, cause I don't see what other way to fix this at the moment! Thanks for your help with it though!

  • max carson
    max carson Nov 23, 2012

    Do let me know how it turns out, hope I was of some assistance.

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sounds like the touch pad is playing up, plug in a usb mouse, and if that works, then it is the touch pad itself

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Posted on Jun 09, 2012

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