Mouse jumps around when power cord is in use not battery.

hi,
i am using a 3rd party cord, apple says to use an apple cord. i dont like them because they are to short and to expensive. plus my dad has a ibook g4 with the apple cord and it does the same thing on mine.

Have you tried resetting the PMU?
The PMU (Power Management Unit) controls trackpad function, so resetting it sometimes helps when the trackpad isn't working right.

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MBP Shuts Down when Power cord is removed

My MBP almost instantly shuts down when the power cord is unplugged. The battery has been fully charged; I've tried restarting the laptop, holding down the power button for 10 seconds, and resetting the SMC.
What is going on??

I'm having the very same problem, and unless I find something on the discussions, I'm taking it into the Apple store as soon as possible.
This is my third battery, and each one seems to have a lifetime of about three months. This situation is different, though. The first one was bulging and shutting down when the battery was below 25% charged and the max battery capacity was dropping sharply. The second one was part of the exchange program, but I noticed it was starting to bulge and the max capacity was starting to drop (below ~60%).
This time, the max capacity is around 75% and I first noticed that it would shut down from sleep sporadically when on battery power. Then today, when I opened it, it shut down immediately. The battery was ~90% charged, but it wouldn't start up without the AC adapter. Now every time I unplug the adapter, the computer shuts down within 3 seconds. I also reset the SMC, which I think is the same process as resetting the PMU, perhaps they are equivalent terms or analogous devices, but the problem persists. There is no way to calibrate the battery since the computer won't run off it.
Unless there is something else to try, I recommend anyone with these problems should ask for a replacement battery.

Compaq 510 touchpad - gets disabled when power cord is disconnected. i.e. in battery mode

compaq 510 touchpad & keyboard - gets disabled & is not working.This happens only when power cord is disconnected from the mains.i.e. in battery mode.External USB mouse works fine.Updated & tried re-installing drivers, but still the problem exists.Please suggest a solution.!!!

Hi,
Schindi285460 wrote:
My Pavilion zd 7379ea will only start up in battery mode. AC adapter appears OK with a firm green LED, so external power supply may not be the issue here? When I'm starting up (with what's left on the battery), both the charging LED and the AC LED are constantly blinking. When turned off, the battery LED is firm, and battery appears to be charging (but which obviously is not the case). Occasionally, when computer is turned off, the AC LED is lit with a firm light.
One odd thing I noted before this happened was that the computer ran on AC only when my HP printer was connected to one of the USB ports (no battery inserted). If I disconnected the printer USB cord, the computer just died immediately; it was like the computer was powered by the printer. Later I also discovered that the same cord (where it connected to the printer) had melted from extreme overheating. I tried to update the USB drivers for each port but it didn't change things. I also tried to connect a different printer to get the computer started but it didn't work this time. I'd be extremely grateful for any comments that may solve this power supply issue (and if possible explain the stuff with the printer connection).
S/N{removed for privacy]; P/N PH989EA#AK8
You unplugged a USB device while the notebook was still booted into Windows and on?
Normally that won't cause any issues but , If you did that you may have damaged your system board's Southport chip.
USB is not a plug n' play port like SATA and eSATA are.
Here is a link to the maintenence manual for your laptop series.
Is your notebook still within warranty? By the processor components listed in the manual,I believe it is probably not.
best regards,
erico
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

My MacBook Pro just shut down without notice. It had about 40% of the battery life. It will not turn back on and I noticed when plugged in the little light on the power cord is blinking orange, not a solid green like normal. Anyone have this issue before

MacBook Pro just shut down without notice. It had about 40% of the battery life. It will not turn back on and I noticed when plugged in the little light on the power cord is blinking orange, not a solid green like normal. Anyone have this issue before? I've only had this for about 3mos. I called apple support. They tried one thing then said I have to take to the apple store. Unfortunately I don't have one nearby. So before I travel an hour+ away I thought is give it a shot on here. Thank.

Hi S,
Did they have you try an SMC Reset: http://support.apple.com/kb/HT3964?

How do i keep my cursor from jumping around when i am typing

how do i keep my cursor from jumping around when i am typing [email protected]
== This happened ==
Every time Firefox opened
== none

Check your settings in System Preferences > Trackpad
Try a different Tracking speed.
Sometimes just cleaning the trackpad can avoid erratic cursor behavior.
How to clean Apple products

Been using LR since 2004. My raws are all of sudden jumping around in Develop module. Image does not stay, it goes forward and backwards randomly, even with magic mouse off. Can't edit. Using MacPro, currently everything. Canon 5dmk3 raws

Been using LR since 2004. My raws are all of sudden jumping around in Develop module. Image does not stay, it goes forward and backwards randomly, even with magic mouse off. Can't edit. Using MacPro, currently everything. Canon 5dmk3 raws

This sounds like a hardware issue. I haven't seen this particular problem reported before.

Mouse jumps around

I have a TouchSmart tx2-1275dx, running vista. Since day one, my mouse jumps around on "black Screen" sites and on movies. If I go to hollisterco.com, for example, my mouse jumps around so bad that I have to use my pen to control movement and clicks. This also happens on movies I watch through programs such as VLC and Media Player. My guess is I have to disable the touch smart feature. I have read through many messages here but I cannot find a suitable solution for my problem. I have gone into the "Pen and Input Devices" folder and disabled everything, but that doesn't work. I will post a photo of what is listed under HID, I read maybe I have to disable something there, but I don't want to mess with that until someone can tell me which device to disable. Under Mouse devices, I have HID compliant mouse, and Synaptics PS/2 Port Tuochpad. If anybody can give me a clue as to how to stop the mouse jumping, I would appreciate it. As I said, it only happens on black screen sites and movies, and I have disable all pen and input devices. Thanks!

Come on...Are you reading my posts at all?? I told you I tried unchecking 'hide pointer while typing', and I tried freezecheck...THEY DON'T WORK...Read what I am writing, please..You know what, please stop trying to help me...I will wait for someone else to respond who knows how to help....

MacBook shuts off when power cord is disconnected

2007 White MacBook shuts off (not shutdown) when power cord is removed. Battery shows 98% charge. Any ideas? I plug AC power back in and it reboots when start button pushed. This problem just started tonight.
HELP!

Ronan... in your case, it looks like it's just time for a new battery. Your battery should hold a full charge for up to about 300 cycles. At that point, you should expect a decline in the charge capacity. As your battery has over 600 cycles, it sounds like it's had a good life. As you've had your MacBook for less than two years, it sounds like you are possibly using more cycles than necessary. You should try to use your MacBook while plugged in the majority of the time... but occasionally use it on battery (going through one or two cycles a week). A full cycle is a full charge and discharge. For example, if your battery is at 100% and you let it discharge to 90% and then you charge it back up to 100%, that is 1/10th of a cycle. You would need to do that 10 times to equal one cycle. If you started at 100% and let your battery discharge to 50% and then charged it up to full, that would be 1/2 cycle... doing this twice would equal one cycle. The number of cycles is the primary indicator of the life of your battery. It sounds like you are using your MacBook mostly on battery (with over 600 cycles in less than two years). After you replace your battery, try to run it plugged in for the majority of the time if possible. Many people are mistakenly under the impression that they should fully discharge their battery before charging it. This is not the case with Lithium Ion/Polymer batteries. This was the case with Nickel Cadmium or Nickel Metal Hydride batteries (much older rechargeable battery technologies). It seems many people still feel that the memory effect of the older battery technologies applies to newer battery technologies. Just the opposite is true.

My macbook pro has been shutting off on its own. The power cord "shuts off" (does not work) simultaneously. Does anyone know what is wrong? or what could be the problem?

My macbook pro has been shutting off on its own. The power cord "shuts off" (does not work) simultaneously. Does anyone know what is wrong? or what could be the problem?
When my mac finally turns on the date/time is reset a windows pops up saying, "Your computer's clock is set to a date before January 1, 2008. This may cause some applications to behave erractically."

Resetting your Mac's PRAM and NVRAM
If you have Apple Care you should give them a call.

My MacBook Air won't charge using the power cord and it's not the power cord that's malfunctioning. The battery is now exhausted.

My MacBook Air won't charge using the power cord and it's not the power cord that's malfunctioning. I went to Radio Shack and tried two new cords. The battery is now dead. Any thoughts?

Unfortunately, my battery has died as a result of not being able to charge with the power cord. Not sure what an SMC reset is but I have made an appointment to bring my laptop in to the Apple Store. Thank you for your response. Very much appreciated.
Warm Regards,
Carla

MacBook Pro does not go to sleep when power cord is connected

Hi Experts,
I have recently discovered that my MacBook Pro (2009) with OSX Lion does not go to sleep when the power cord is connected. It does not matter if I close the lid or select sleep from the Apple menu. All that happens is that the screen is powered off, the SIL is solid and I can hear the HDD/fan. I have not changed any of my power settings recently and it has not been a problem previously. If I disconnect the power cord the MB goes to sleep as supposed to (the SIL led starts flashing).
Doing some research I have found other users with somewhat the same issues when VMWare Fusion is installed. I have done some further testing and it seems that if I disable the virtual machine's Network Adapter and quit VMWare Fusion the MB goes into sleeping mode when the lid is closed even with the power cord connected. Enabling the Network Adapter again prevents the MB to go into sleeping mode when the power cord is connected. This even applies when the VMWare application is shutted down.
My guess is that the Network Adapter somehow prevents the MB to go into sleeping mode. The workaround is of course toggling the Network Adapter on and off but the virtual machine has to be running in order to do so. Not being that familiar with network settings on a Mac is there any other way to get around the problem?
Thanks in advance :-)

To anyone,
I have turned internet sharing off but the Ethernet box remains checked. If I uncheck the Ethernet box, the Internet Sharing bubble turns red, however when I close System Preferences and re-open, the box is automatically checked although Internet Sharing is off. Because of this my Macbook Pro will not sleep properly.
All other sharing items are turned off. Only Internet Sharing continues to automatically show Ethernet as active from a Wi-Fi connection.
Any advice?

Touchpad pointer jumps around when connecting to HDMIt

Greetings,
I have been using the HDMI port of my Macbook pro retina for 1 year with my samsung LCD,
and yesterday while im connected through the hdmi my touchpad
is completely erratic, jumping around and self clicking.
Before i had no problem!
when i disconnect the Hdmi cable everything is fine again.
Pleast help, any ideas why suddenly my touchpad is behaving like this?
Many thanks,
Nico

There are several possible causes for this issue. Please take each of the following steps that you haven't already tried until it's resolved. Some may not apply in your case.
1. Follow the instructions in this support article, and also this one, if applicable. A damaged or defective AC adapter could be the cause, even if it's the right kind.
2. Press down all four corners of the trackpad at once and release. If there's any effect, it's likely to be temporary, and in that case the unit must be serviced or replaced.
3. Open the Bluetooth preference pane in System Preferences and delete all pointing devices other than the trackpad, if applicable. Disconnect any USB pointing devices. By a "pointing device," I mean a peripheral that moves the cursor, such as a trackpad, mouse, trackball, or graphics tablet. A plain keyboard is not a pointing device.
4. Start up in safe mode and test, preferably without launching any third-party applications. If you don't have the problem in safe mode, but it comes back when you restart as usual, stop here and post your results. Do the same if you can't start in safe mode. If there was no difference in safe mode, go on to the next step.
5. Reset the System Management Controller.
6. If you're using a Bluetooth trackpad or mouse, investigate potential sources of interference, including USB 3 devices.
7. A swollen battery in a portable computer can impinge on the trackpad from below and cause erratic behavior. If you have trouble clicking the trackpad, this is likely the reason. The battery must be replaced without delay.
8. A defective peripheral device or a damaged cable can cause the built-in trackpad of a MacBook to behave erratically. If you're using any wired peripherals, disconnect them one at a time and test.
9. There's also a report of erratic cursor movements caused by an external display that was connected but not turned on.
10. If none of the above applies, or if you have another reason to think that your computer is being remotely controlled, remove it from the network by turning off Wi-Fi (or your Wi-Fi access point), disconnecting from a Bluetooth network link, and unplugging the Ethernet cable or USB modem, whichever is applicable. If the cursor movements stop at once, you should suspect an intrusion.
11. Make a "Genius" appointment at an Apple Store to have the machine and/or external trackpad tested.

IBook Won't Sleep When Power Cord Is On/Charging

Hi!
I have a problem putting my iBook to sleep. I can't put it to "normal" sleep manually or by closing the lid. It wakes up after a few seconds and then go to sleep again and then wakes up again, etc. It does this over and over again. However, I noticed that when I remove the power cord from my iBook, it goes to normal sleep but when I insert it back again, the problem recurrs. What could be wrong?
Also, I'm not sure this is related but I also noticed that the key "n" is not responding normally. I have to press it harder so that I can make it appear on the screen when i type and sometimes it types a lot of "n's" even when I'm not pressing it or pressed it only once, e.g. onnnnnnnce (I only pressed "n" once).
I am really confused...please help! Thanks in advance!
iBook G4 Mac OS X (10.4.6)

Hi Jo-Ann,
Welcome to Apple Discussions
Go to System Preferences > Power Adapter (from popup menu next to Settings For:; are the slides on never? You might want to try resetting the PMU (Knowledge Base Document #14449, which covers Resetting Powerbook and iBook Power Management Unit (PMU)).
I believe you key may be stuck. You should bring it to your local Apple Store/Reseller and have them take a look at it. If you are still having a sleep problem; they can look at that too
Jon
Mac Mini 1.42Ghz, iPod (All), Airport (Graphite & Express), G4 1.33Ghz iBook, G4 iMac 1Ghz, G3 500Mhz, iBook iMac 233Mhz, eMate, Power Mac 5400 LC, PowerBook 540c, Macintosh 128K, Apple //e, Apple //, and some more... Mac OS X (10.4.5) Moto Razr, iLife '06, SmartDisk 160Gb, Apple BT Mouse, Sight..

Wireless Mighty Mouse jumps around?!

Hi there!
I have an quite annoying issue with my wireless mm:
Sometimes it lets the cursor jump around and it is almost impossible to control it.
I am pretty sure it does not have to do with dust on the lens or shiny surfaces, because for 2 weeks it worked without any worries in the same environment. I almost believed the problem was gone.
Most of the time I manage to solve the problem by switching the mouse on&off for a couple of times and/or reinitializing the bluetooth connection.
Then it usually works for a while. But next time i wake my MacBook it starts all over again!!
Does anyone know this problem?
Thanks for any help!

I too am having this problem. I bought the mouse about two months ago and the day I synced it with my iMac it started freaking out too. I tried all the usual things, i.e. cleaned it, tried different mouse pads, tuned down tracking, resync it, everything. It just didn't work, but then I went on a trip and decided, "What the heck, I'll take the mouse and try fixing it on my MacBook Air." I get to my destination and resync it with the Air and it works perfectly, so I figured my desktop was the problem. I get home a few days latter after having used the mouse flawlessly and try it again in my house, when suddenly, it begins to jump around my MacBook Air. So I turned off the Bluetooth on my iMac (only a few feet from me and the Air) and the problem went away... for about 30 minutes, then my mother got on her iMac in her room, one room away, and lo- the problem did recur!
I believe the problem has something to do with the fact that the Mighty Mouse and the Wireless Keyboard both use the entire gamete of frequencies the Bluetooth has, thus, it is trying to sync with anything with Bluetooth in it, cellphones, PS3's, ext... Because if I take one of my MacBook's out into my ranch, far from anything, including my iPhone, the Mighty Mouse works! But the second I bring something with Bluetooth in range of the mouse, BAM! CRAZY MOUSE TIME!
I have dug around the Bluetooth shell inside OS X and found you can limit which bandwidths your computer receives, but this solves nothing if it is the mouse itself trying to sync with every computer and phone within range. I doubt this is how Apple intended the thing to work but they may have assumed that it was only meant as a traveling mouse, or perhaps to be used by people with only one Mac?
Perhaps there is a firmware patch out there that might solve this? I have seen ones for OS 9 and below, but nothing about OS X

Spilled water on Laptop- it works only when power cord NOT plugged in.

HP Pavilion dv2000 laptop I spilled plenty of water on the right side where the power cord is. I removed that and took the battery out. (12 cell i think) Dried out the laptop for about a day or so. The laptop is fine except when I'm trying to charge while ON, it automatically turns OFF. So, what gives? How much money do I have to pour into it to fix it?
Thanks!

Water and electricity do not mix (obviously ). When you are plugging in the adapter into your computer, there may be a short somewhere where the water was.
Maybe let it dry out some more, otherwise, I would take it to a local repair shop to look at it (if you're out of warrnty).

Mouse jumps around when power cord is in use not battery.

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