Laptop freezes when the power cable is plugged in.

I have a satellite A205-S4777. When the power cable is plugged in the machine freezes. The machine works fine when working on battery power alone. Any suggestions?

I'm assuming this is out of warranty. If you're comfortable doing so, you could use a digital multimeter to check the output of the AC adaptor and ensure it matches what's on its label. If it's incorrect, you would need to purchase a replacement AC adaptor. If it is correct, the laptop might need servicing. If you're not comfortable using a digital multimeter or don't want to purchase one, you still might want to take a guess and try replacing the AC adaptor, but you can't be positive that it's the cause.
- Peter

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My macbook air keeps shutting down unexpectedly, any thoughts? It seems to be while streaming movies etc and i think it's when the power cable is plugged in, not while on battery

It's only 3 months old, I think it's mostly while streaming movies from the net whilst the power supply is plugged in? I have seen a couple of other similar posts. Any thoughts or advice greatly appreciated.

Try a SMC reset.
http://support.apple.com/kb/HT3964

Satellite Pro U400 sometimes freezes when the power cord is plugged in

Hello! I know this problem has been discussed here and there but I would like to open a new thread on that. Here is the scenario.
I have recently bought a new Toshiba Satellite Pro U400-247 (PSU45E) with two batteries: (a) the original one, (b) additionally purchased Toshiba genuine PA3636U-1BRL, 7200 mAh. The notebook has the latest BIOS (4.80) and the latest drivers downloaded from Toshiba and installed (ConfigFree is not installed). I am using XP Pro SP3 (clean install done by myself). Everything is working very well, except for one thing:
Sometimes (but not always), when the notebook is working on battery and I plug in the power cord, everything freezes and I have to restart. Some observations:
(a) it tends to happen more frequently when the low battery alarm has already sounded;
(b) it seems to happen more frequently with the 7200 mAh battery and less frequently with the original battery;
(c) it seems to happen more often when a USB device (e.g. mouse) has been connected with the notebook, but that is not a rule;
(d) it seems to happen less frequently when I move the USB mouse at the time I am plugging in the power cord;
(e) I have experimented a lot with Toshiba PowerSaver's settings (e.g. changed the CPU levels for my profiles) but nothing I have modified seems to change the situation;
(f) I have tried various suggestions I found on different forums, but no avail (e.g. BIOS settings);
(g) otherwise, I can say that I really have not seen a smoother computer, everything else is really working just fine, no other problems whatsoever :)
All this makes me think that this must be some kind of bug in the motherboard drivers, the PowerSaver driver or other drivers interacting with the battery, the CPU or possibly USB. Is there an explanation for this problem and can it be rectified somehow (e.g. by providing a driver update)?

Hello, thanks for the reply!
My bad, of course I meant the chipset driver. That, however, does not change the essence of the question. Also, I know that a notebook should function properly even the AC adaptor is connected or not connected. That is why I posted my question.
As for the OS reinstall, sorry, I would not do that just on some wild guess from somebody. I recently finished the clean OS install. I have installed XP on dozens of notebooks in my life and I know what I am doing. I have been into computers and networking for 15 years and I know when I see a problem not related to how I install my OSes.
My personal opinion: this problem has not to do with the OS install since the same problem also existed when I test-installed the XP OS image from Toshiba's own downgrade CD (that was before I did a clean install from my own slipstreamed CD). And, if you really use a properly and carefully configured OS with all the necessary software, an OS reinstall is not something you just do every day.
As for the rest (testing the memory / adapter / motherboard etc.): as I have mentioned, similar (although not identical) topics have been raised in various other instances (e.g. at http://laptopforums.toshiba.com/t5/B...EABCA64EE6C5D9) . That means that this problem is most probably not specific to my computer or even to U400 but it may happen with other Toshiba notebooks too. Therefore a (rather standard) suggestion to spend days on reinstalling (and in my case, carefully reconfiguring) the OS, checking the memory, adapter, mobo etc. does not sound as the most plausible one in this case. FYI, I always do full tests on hardware right after I have installed an OS. In this computer, all tests (Toshiba's own; 3rd party memory diagnostics, HDD diagnostics) were passed OK. Indeed, I did not have the AC adapter tested but as it otherwise works fine, the possible problem (if there is one) would be a minor one to notice, and would require testing at a Toshiba service centre (there is no direct Toshiba agency in my country). I think testing the AC adapter is the last resort as much more probably, the problem lies somewhere else.
Even if this problem is hardware-related, I do not expect Toshiba to replace all such hardware out there. However, on many occasions, hardware-related problems can be cured or alleviated on the software side (e.g. by a driver or BIOS update). Since it seems that other people are having similar problems with Toshiba hardware/software, I thought that maybe someone has found an actual solution or maybe there are Toshiba employees reading these forums who could look into it.

Macbook Pro 2011 DVI HDMI out does not work with TV when the power cable is connected

My Macbook Pro (Early 2011) DVI HDMI out does not work with TV when the power cable is connected. If get the blue screen and then can use the macbook but nothing is displayed on the TV. If i go into display I can see that there are two screens but nothing displayed on the TV. If i take the power cable out at this point the TV shows the second desktop as expected. If i then reconnect the cable, the screen flickers, as though it is being affected by the power cable, and the screen goes blank on the TV. Only if i remove the DVI cable do i get the blue screen again. If i remove the power cable and reconnect it will do it every single time, so i cannot see it being a TV issue or a minor glitch.
I have had this working previously but at the minute it seems to not be playing ball....any thoughts
Thanks
Dan

BUMP
Any ideas?

Why does my macbook only turn on when the power adapter is plugged in?

The battery life says its at 73% and climbing but whenever I unplug my power adapter the mac automatically shuts down and if I try to turn on the macbook without my power adapter plugged in, it wont turn on. How do I make it go back to where I can turn the mac on without it being plugged in? Thank you for your help!

I would try two things the first being resetting the System Management Controller:
1) If the computer is on, turn it off.
2) Disconnect the AC Adapter and remove the computer's battery.
3) Press and hold down the power button for 5 seconds and then release the button.
4) Reconnect the battery and AC Adapter.
5) Press the Power button to restart the computer.
If that doesn't work I would recalibrate the battery.
To calibrate the battery:
1) Plug in the MagSafe power adapter and fully charge the MacBook or MacBook Pro battery until the light on the MagSafe connector changes to green and the Battery icon in the menu bar indicates that the battery is fully charged.
2) Allow the battery to rest in the fully charged state for two hours or longer. You may use your computer during this time as long as the power adapter is plugged in.
3) Disconnect the power adapter with the computer on and start using it with battery power. When the battery's charge gets low, you’ll see the low battery warning dialog on the screen.
4) Continue to keep your computer turned on until it goes to sleep. Save your work and close all applications when the battery's charge gets low and before the computer goes to sleep.
5) Turn off the computer or allow it to sleep for five hours or longer.
6) Reconnect the power adapter and leave it connected until the battery is fully charged. You may use your computer during this time.

Laptop freezes when connecting Power Adapter

Hi guys, I have an i7 Y560 Lenovo Everytime I connect my power adapter to the laptop the laptop just freezes. Alternatively if I boot up with the power cord attached the windows boots, but the login page never appears, I just get a black screen. I have to say that the laptop works perfectly fine on battery. My CPU and GPU temperatures are reported to be around 60C and 55C respectively. I have tried a different power adapter, no luck, so that power adapter is working. Another thing to note, when switched off, the battery is charging normally. I have opened my laptop and also cleaned it, and I'm in the process of replacing my DC jack just in case its shorting. Any other suggestions of what could be causing this ? Specs:Lenovo Y560i7 720QM Processor4x2GB RAM - 8GB512GB SSD DriveWindows 7 ProfessionalLaptop Age: 2yrs 5 months

After some searching i found out what was preventing me from booting successfully
This thread here has the solution
http://forums.lenovo.com/t5/IdeaPad-Y-U-V-Z-and-P-series/ideapad-y560-radeon-5730-black-screen-need-...
, apparently there are some problems with the power options/energy management, what ever.The computer would open and work fine (with the driver you gave me) if I open it running solely on the battery and not connected by the power cord. Everything seems normal
Graphically utilized softwares would run normally,the screen runs at native resolution etc.
However as soon as I plug in the power cord it would freeze (or perhaps refresh at less than 1Hz and then gradually completely freezes if that makes sense)
After looking at the instructions in that thread:-
i had to adjust the energy settings in windows. the mininmal performance is set to 100 percent for running with cable. if you set it to 5% like running on battery, it isnt crashing. perhaps this could be a solution to other having the black screen after windows logo.
here's what to do:
boot in safe mode and adjust your energy settings for running with ac adapter. set the minimal performance to 5%"
so I got kinda confused here i assume he is talking about the processor power management settings
So running normally i set the minimum processor state to 5% for 'Plugged in' (All inside the high performance preset which i assume will be loaded at startup)I restarted with the powercord on, still got a black screen.
So off to safemode,
"adjust your energy settings for running with ac adapter. set the minimal performance to 5%"
from what I can interpret, it seems like there's a specific option inside the minimum processor state ( on battery and plugged in)
however there is only one option (percentage) I think it's global for both.
It is set to 5%.
I am just one step away....

Laptop crashes when ac power cord is plugged in or removed

i have a dell inspiron duo 1090. whenever i plug in, or remove the power cord the system crashes. it appears as though it kills xorg or xserver or whatever in the process. basically the screen goes to terminal and it sends a bunch of text really fast, and then freezes. i'm not sure how to get the message as the computer is frozen at the time...or if it would be helpful. if anyone has experienced this or has any ideas i'd be really happy to get this taken care of. thanks!

@boohoomill: i've been trying to recreate the crash to check the logs. strangely i haven't been able to. i suppose that's good, for now. i'll post the logs if i can get the system to crash again. it's really weird that it did that EVERY time i plugged in or unplugged the ac power cord....until i wanted to check the logs.
@ewaller: I am using Gnome, i have not installed acpid, laptop-tools though, or any other type of laptop power saving stuff like cpu frequency scaling. i suppose that i have the basic power management package that comes with gnome.....at least i think that it belongs to gnome.

Why do my speakers make a loud hissing/white noise when the aux cable is plugged in at the same time my thunderbolt to dvi adapter/cable is plugged in?

I have tried this with headphones and speakers and the result is the same. I have tried this with multiple displays, multiple thunderbolt to dvi adapters, and multiple dvi cables. Does anyone know if there is a way to fix this? Thank you in advance!

What's on the other end of the Aux cable

No Alarm beep when unplugging the power cable from an L530?

With my new ThinkPad L530, I miss the beep when the power cable is unplugged. So far, I did not find any option to switch that alarm on. Has this function been removed completely?
thanks
Wilfried
L530 2478-25G Win 7 Pro SP1 64-bit; R500 2733-6RG XP SP3; T42p; T30 ... and several other models of IBM TPs in the past since 1996
Solved!
Go to Solution.

I hope you know what is modding in general? Same goes for bios. Meaning editing the bios image and unlock the hidden options a andcthen flashing the bios. This method voids warranty so it isn't recommended. Though you can have a look here
Http://bios-mods.com
regards
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
If you think a post helped you, then you can give Kudos to the post by pressing the Star on the left of the post. If you think a post solved your problem, then mark it as a solution so that others having the same problem can refer to it.

Does the power cable from my 24" CinemaDisplay have to connected for the display to work. I just had it repaired and now it seems to have to be plugged into the laptop I dont remember it being like that before.

Is the power cable from the display required to be plugged into my MBP for my display to work. Recently had work done on the display (power supply replaced twice, glass replaced twice). Also since I got it back from repair my system goes to sleep sleeps even though I have it set not to. Frustrated

awesome, so you sound like you know what your going on about. im guessing its a Software fault tbh, because its like the phone is dead.. very upsetting..but with it not being the screen if they dont ask me to replace it and to send it off for repair what can i say as to a loan phone, mind a ease a little bit now i will just now wait for tommorrow to see what happens thank you

I recently bought a Macbook Air and a Thunderbolt Display and the laptop's power is supposed to come from the display, but the power cable on the display does not fit into the Macbook Air.

I recently bought a 11" Macbook Air and a 27" Thunderbolt Display.The laptop's power is supposed to come from the display when connected, but the power cable on the display does not fit into the Macbook Air.

If your MBair is a 2012 model, it has a Magsafe 2 power connection. The monitor probably has the old magsafe connection. If this is the case, you need this adapter.
http://store.apple.com/us/product/MD504ZM/A?fnode=5a

My macbook will not charge and turns off completely when I remove the power cable. can anyone help?

The battery is sitting at 75% and has not moved even though it is plugged into the mains. It will not switch on unless connected to the power cable and turns straight off when disconnected. The wee green light is on the cable is on when plugged in so its not the power cable. Could it be my battery? the I only bought this two years ago.
Please help.

You posted your question in the "Intel iMac Forum". You should repost it in the appropriate "MacBook Forum" in order to get an accurate response.

I have a 27" thunderbolt display NOT the iMac, and I'm trying to connect my xbox 360 to it via the Belkin AV360. I plug everything in and it does not work? I check all the power cables and and connections and still not he issue. Iv'e tried C-F2 also. Help

I have a 27" thunderbolt display NOT the iMac, and I'm trying to connect my xbox 360 to it via the Belkin AV360. I plug everything in and it does not work? I check all the power cables and and connections and still not he issue. Iv'e tried C-F2 also. has anyone used this devive (AV360) on there own 27" thunderbolt display (not the imac) and gotten it to work? If so I'd appreciate the help.

There are multiple reasons that lead to issue. You should read the troubleshooting guide to get the right solution to solve the issue: iPhone, iPad, or iPod touch not recognized in iTunes for Windows - Apple Support

Macbook powers on by itself when i connect the power cable

Hi,
Since Leopard, my Macbook has decided to no longer rely on the stupid user pushing the power button. It simply switches itself on every time i connect the power cable
You know: I often come home in the evenings with a drained battery, connect the cable and charge the battery overnight. I don't want to switch the baby on. But my Macbook thinks otherwise.
First i thought it maybe have somthing to do with the hardware-energy settings (power on after power loss), but the option is disabled.
So what? Has the Macbook become more intelligent or am I just to stupid to find the right option? (Care what you say..!)
Cheers,
Fox

Hello World!
No one here who can help me?
I simply want to use the Power Button for what it is for. I don't want my Macbook to switch itself on everytime i plug in the power cable.
This behaviour is only since 10.5 install (I did archive&install)
Fox

HT3205 My Macbook pro can not power on after not being in use for two months. all the battery indicator lights lights but when the power on botton is pressed, the laptop makes intermitent noise

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Yes, I took it to apple store, George Town, US and one out of the two memory chips was bad. It was replaced free of charge because the Mac book pro was under warranty, and it is working perfectly.
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Laptop freezes when the power cable is plugged in.

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