Dell Latitude E6540 :: PSU Makes Strange Noises When Is Cold And Under Very Light Load
Dec 7, 2014
I have 130W(model DA130PE1-00) dell orginal PSU and dell e6540.
When i plug in PSU into my notebook, then i turn it on, and after windows loads, it starting to make strange noise. after it warm up to 30 deegres of celsius, it stops making it
I have noticed that loudness of the noise is inversly proportional to load and temperature. When PSU is cold and notebook is idling - it makes the strange noise. When PSU cold and noteboot is under moderate load - it stops making it. When PSU is warm (about 30 deegres of celsius) and is idling - i need to PSU at front of my ear.
The noise seems to coming from AC connector's side (Where PSU have connector for AC cable). PSU doesn't make this noise when i put it off from notebook.
Why PSU does make such noise? Why it is inversly proportional to temperature and load ? This is dangerous to me and my notebook ?
Exactly it looks like:
1. I turn on my notebook under AC, the PSU is making "click sound" till it become warmer.
2. After that there is buzzing sound, that is not as loud as clicking (i have to put ear at front of my PSU), and the buzzing sound is inversly proportional to load of the PSU.
I have a new M1530 and I just have a couple of minor issues.
Firstly, the harddrive always makes noises (like it is thinking) even when the computer is idle. It's not loud and just sounds like normal access sounds, but it makes a little noise every 2 seconds or so. Is this normal and can I make it stop? Like I said, the noise sounds like a normal HD noise, but it just never shuts up.
Finally, has anyone had problems connecting to wireless networks in vista? I have connected my laptop to 2 networks already and it was fine, but now when I try and connect to my main network, it asks for "additional log on information", including a username, password and domain. I don't have this info and have only ever used a WEP key...
A few weeks ago I spilled green tea (no milk or sugar) on the desk around my Acer Aspire 5920 laptop. The tea went into the back left quarter of the machine, mainly through the ventilation holes and the ports on the left side. I removed the battery, drained the liquid, and let the machine dry out thoroughly. Since then the machine has worked fine. However, it occasionally makes strange noises, especially on start up. It's a fizzing/popping noise, in short bursts, like static. It sounds as if it's coming from the loudspeaker.
does anyone know the machine well enough to diagnose the fault? Only the components in the back left quarter of the machine got wet. Could there still be water in there? Is the noise a sign of a serious problem? What can I do to fix it? As I said, the spill happened several weeks ago, and, apart from the noise, the machine works fine.
My DELL n5110 (core i7) randomly makes a strange Single Beep, then a clicking sound which i think comes from it's bottom left corner, this happens while i'am normally operating it, with no error what so ever, and it continues work, nothing appears on the screen, no system notifications, nothing at all, just Single Beep, then a Clicking sound that comes from it's bottom left corner and lasts less than a second, that's it, it's not bothering me, but what is it !!!?
I have a latitude E6540 and when I connect a external usb 3.0 disk it begins connect and disconnect randomly. I have tryed another disk and I have the same problem. This USB disk in other latitude E6540 works fine. I have disabled power option in the usb devices and reinstall drivers but nothing solved the problem.
The A10 BIOS update for the E6540, released on the 4th of July, causes severe keyboard issues on Linux. During routine typing, keys will 'stick' until any other key is pressed. The keys that stick vary and seem random: sometimes it's the space bar, sometimes alphanumerics and sometimes, worst of all, the backspace key.
This went on for a couple of weeks, I then noted that the BIOS update changelog included "Keyboard input improvement." and so rebooted back in to Windows 7 and downgraded to A08. I have had no problems since.
OS: Arch Linux, kernel 3.15.x, KDE 4.13.x
I've also had problems with the backlight coming on on its own, after the lid has been shut, but I have not been able to determine if this is a firmware issue. I do note however, that LCD backlight issues have been addressed in this BIOS update as well. My current workaround is to use the possum mode thingy (Fn + B), which turns off all sound and vision.
my laptop is 1 week old and the fan constantly switches on and off, its under no load just idling, its a very loud and annoying problem, when I spoke to Dell they claim to have no knowledge of the problem, how can this be when a search shows up plenty on the subject.
they sent a technician out with a new fan but did not bother to replace because it will not solve the problem.
they are sending a new replacement, but I think it will have the same problem.
its a shame because I love the XPS, Dell need to get there act together and solve the problem.
my laptop came with latest bios and still has fan problem.
I have a Latitude E6510 that will not start. When pressing the power button, the power light goes on for about 5 seconds and then turns off. I also notice the battery light flashes a few times when re-connecting the AC adapter.
Removed the battery, held in the power button 30 seconds, but still not working.
We have had this laptop about 6 months. About a month ago, it exhibited this problem. After talking to Dell Support, they recommended a system board replacement. The laptop was sent in and the board was replaced. When I got it back and tried to start it for the first time, it did the same thing. I then pressed the Latitude "ON" button, and the laptop started.
Now it is doing the same thing, and I find it hard to believe that another system board is bad. I am suspicious about this "ON" feature, that maybe the laptop is "stuck" or something trying to get into the "ON" mode. Or maybe it is just trying to get into "ON" mode.
I am not sure what the "ON" feature does, but I have noticed a few other posts on the internet of users having the exact same problem. Again--I find it hard to believe a second system board could be bad.
2 days ago I was given a new work laptop - the E7440 (its brand new).
Straight away I noticed some loud buzzing noises which a fellow colleague said was the fan. It's quite annoying. I soon noticed however when my laptop was idle these noises would stop, and when I clicked they would start again. Whenever I ask the Laptop to do anything these noises start up, and considering im active on the machine all day.
There are high pitched, buzzing noises. And as mentioned are aligned to when the laptop is processing something. They also make sounds when I scroll the mouse for example.
I bought a Dell Inspiron 15r 3537 five or so months ago. I haven't had many problems with it but just today, I have run into a few issues, wont load up, the power light flashes for a split second then nothing which seemed to resolve it's self after I ran a systems diagnostics (which everything was running fine and I received no error codes). I left it alone for a few hours and then when I started it back it up....nothing. It isn't taking charge though the charger is still showing a green light on it. I've taken the battery out and held down the button for 15-30-45 seconds all with no result.
I'm starting customising my new Latitude E5550 laptop.
After turning on Bitlocker I noticed that when I shut down the laptop, it goes to sleep. Even if I logoff first then request a shutdown it still just goes to sleep. I can request a restart which does work - it restarts, but a shutdown still makes it go to sleep. I can hold the power button to force it off. Doing that or when requesting a restart, the laptop starts back up but I find that the laptop goes into Flight mode. The Flight mode symbol is visible even before you logon.
I turned off Bitlocker, and the problem has gone away. Is there a solution for this?
Should I use the Dell DDP Encryption product instead?
I own a Dell Latitude E5510. I *love* this laptop.
However, today I started having a problem with it. The laptop turned off suddenly. When I went to turn it back on, it began to load as usual with the following things on the screen:
1. the circular logo in the center of the screen.
2. the "press f12 for boot menu" thing in the top right corner.
3. the blue loading bar beneath the circular logo in the center.
What happens is the blue bar fills up, but then the screen goes black. It doesn't just instantly go black though. It starts from the top of the screen and moves to the bottom. It does the same thing when I press f12 to get into the boot menu.
I purchased a refurbished Dell e6410 about a year ago. The Laptop was working find with no issues. But in mid August, I did a windows 7 update... After the update, windows restarted... But instead of booting up to windows... It went to "startup repair". It ran this several times until is said it could not repair the startup.
I ended up having to do a recovery and reload windows and re-image my HD... After doing that, I tried windows update again. Same issue. after windows update... It would just got to startup repair.
Again, I had to restore my OS and re-image my drive. I tested and checked the HD and go no errors. Ran disk check and disk check /r... But if I tried to run a windows update it would just go into startup repair and I would eventually have to just reload my os and re-image the drive.
I spoke to an agent from Dell about it... He suggested I wait a month before trying to do the windows update. Perhaps they have a bug.
So I waited two months and tried an update again, last night. This time, I would get the dell logo, with f12 option, that would go away and then "windows is loading necessary files", but then the screen would go black and dell screen came up gain, then "windows is loading necessary files". I let it do this for almost an hour. Windows never started... I had no option to get into safe mode or any other boot modes. I have a regular desk top pc that I have done windows update and it has no issues.
I have a new Dell Latitude. When I first started working with it, a box asked if I wanted the screen to adjust to ambient light. Being new at this, I said yes. Now, I have a monitor which is constantly getting brighter and dimmer even within a few seconds.
My Latitude D800 laptop recently had trouble to turn on. When pressed the power button (no matter how hrad or hard long to press), nothing happened, totally dead, power light didn't turn on at all. I tried with battery (two batteries) only, AC power only and both, same thing, but sometimes it could be turned on when I waited for a while or came back later and tried again.
I was asked to take a look at an E5500. This is what I found:
a) a screen that could only be seen with the correct reflected light; and b) outboard screen working perfectly.
This is what I did:
a) tried a known replacement inverter board and this didn't solve the problem; b) tried a known working LCD screen and this didn't work; c) checked the video cable and it looks fine; and d) since there's no screen switch that might be stuck and I'm assuming that all functions are software controlled.
I did a clean install of xp pro. Still no good. I looked for a SMD e.g. a fuse and found none.
I have a Dell E4310, about 2 years old. When I connect the charger just to a power socket the green light on the charger comes on but when I plug the other end into the laptop the green light on the charger goes off, I have taken the battery off the laptop and it still does the same thing, and in both cases the laptop will not power up and no light appears on it.
One of my users brought me this issue the other day. He is using a Latitude D830 laptop with a D/port docking station. With or without the laptop docked, The power button on the docking station flashes Orange and Green when powered. I've swapped power bricks for the dock. The laptop still seems to charge while being docked. After swapping the dock, the new dock is fine.
What might be causing it? Is the dock dead? Could it be a failed port on the docking station?
my E1705 has trouble booting whenever its on the battery. At first I thought it may be a defective battery but I just bought a new one and it still does the same thing. It will power on but the monitor will not turn on. Everything is perfect if its plugged into the adapter and will start every time, just not on battery. It will take about 15-20 times of on and off with the power button, and THEN it will turn on with the battery. After I get it to boot a few times, it boots everytime on the battery, its very strange, it seems like it needs to "warm up" before it works ...
I bought a refurbished XPS 1330 in mid-2008 from the Dell Outlet and a few days ago started experiencing what so many others have.
I was told my a supervisor today that my machine shipped with a motherboard that was updated to address the NVidia issue, and the extended warranty wouldn't help me. I have a fried machine that's less than two years old, and Dell says I'm on my own.
From reading other posts here, it looks like this problem is deeper and more widespread than they're letting on now.
I had to have my motherboard replaced because of some audio issues and after I got my laptop back i noticed something that hadn't been happening before.
As soon as I turn on my laptop the fan start working extremely loud with cold air coming out. I know that the fan is supposed to be this loud when laptop is close to overheating, but I don't see the point of being this loud while everything is on normal temperature (checked with SpeedFan) and laptop doesn't feel hot at all.
I have a Sony Vaio VGN-SZ483N with Windows Vista Business Edition SP1. For some reason, everytime i first boot up my laptop Vista will automatically restart with no error messages whatsoever.
I disabled the automatic restart option in vista and the same thing happens. However, once it's done the initial restart everything works normally and therefore i dont think it has anything to do with over-heating. I used to have windows xp pro sp3 and this did not happen
Refurbished Laptop - latitude E6410. The battery light contrantly flashes on the Battery five or Six solid blue lights - Then three flashing lights.In addition, the Light on the Computer ( ) and the desk top icon for the power adaptor cord /battery says" Plugged in - Not charging".I ran the Dell Diagnostics (Fn key at bootup) but it found no problems.is the battery dead?
screens that flickered every time they moved their monitor. My issue is very weird. When I first turn my computer on or wake it up the screen seems like it takes forever to come on. If you wiggle the monitor it will pop up and then go out again until you find the right spot. Now at this point I would think it is a pinched cable but as the computer warms up the problem completely goes away. I can move the monitor all around and have no problems whatsoever. This is something I can deal with but would like to know what the problem is. It is a DV9000 series laptop that is about 2 years old w/ windows 7. I just ordered a new battery for it because "it" told me I needed a new one. Wondering if it is a power issue or what.