HP/Compaq :: HP Nx7400 - Whenever I Plug The AC Adapter To My Laptop Whole Performance Is Very Slow
Apr 1, 2009
I have an HP Compaq nx7400. I've had it for over 3 years now. I've never changed its battery ever since I bought it.
Over the past few weeks, I've been having an unusual problem. Whenever I plug the AC adapter to my laptop, the whole laptop performance - from the second I switch it on - is very slow. The moment I pull the AC adapter from the laptop, it instantly operates at a normal and fast speed again!
I figured that it must have been a problem with the AC adapter (it's had its fair share of use - being swung around and dragged to lectures...). So I ordered another one off Ebay. Today, I got the new adapter and when I plugged it in, the laptop only went on AC power. It worked fine - fast as normal. However, it was not charging - just on AC power. I am starting to question if the adapter was really as "genuine" like it was advertised on eBay. But anyway... after about 4 hours with the new adapter on AC power, it stopped recognizing the battery altogether and alerted me with a Critical Battery sign. Of course, a few minutes later, it went dead on me - the laptop switched off. It was as if I removed the AC adapter myself, only I hadn't. Now, I am trying to plug it in again (the new one), to see if it will be able to power up again and it just won't respond at all.
On the other hand, when I put the old AC adapter, the laptop switches on but doesn't charge. Again, it is extremely slow with the adapter on, and fast when I pull the wire out. Only for a minute or so until it dies on me again...
I recently updated my Dell m4800 to BIOS A8 with Windows 7 64. I had been using a collection of older power adapters from my previous Dell m4400 without any issues. After the update, wow. A huge performance hit if I do not have the 19.5 volt and 9.23 amp adapter connected.
The m4400 power adapter is 19.5 volt and 6.7 amp. Pretty close right? Not any more.
I do have it connected to a Dell docking station almost all the time. Just checked. They are both 6.7 amp.
What changed in BIOS A8 and what the deal is with the performance? Looks like I need to request a new docking station, but I'm not sure IT will believe my story.
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.
I just update my aspire 4745 BIOS version from 1.04 to 1.23. After that it making a big problem. If i plug in AC adapter it geting shut down. But if i turn on it without AC supply, it works perfectly. But if i try to turn on laptop after plagged AC supply, it not respons anything,
A friend gave me his dv1000/ dv1515cl to fix, I believe it's the mobo but not sure .when I plug in ac adapter wont boot but light shows batt. charging .If I unplug ac, remove batt. then I reinstall batt. all tights come on but when I open laptop it shuts off.
Today when I wanted to turn on the laptop, the screen was RED. I tried couple of times again, with connected to the power AC and without, but it starts Windows and everything is working, but my screen is still RED. I connected the laptop to an external monitor to check if the graphic card is causing the problem, but no, the picture was perfect. So I'm guessing it is something with inverters or the hole LCD. Do you have any ideas? And is is possible to buy spare parts from HP (I live in Germany)?
I've been using my nx7400 for more than 3 years. I undervolted it with RM Clock and it was always running around 45-52 degrees idle and 53-59 under load. The fan only kicked in under load and over 55 degrees.
I changed the CPU fan for a new one, I changed the thermal paste for MX-3 and I regularly use compressed air to clean the heat sink.
Lately, it's running full throttle in intervals even in idle and temperatures 45-50. (5-15 seconds full throttle, 10 seconds inaudible... and so on)
I could always leave it on my nightstand 24/7 as it was inaudible.
Trying to get BT capabilities on my NX7400 and found the right card for it, but the seller warns I may need some kind of a cable to connect it. I'm trying to find out if this model comes standard with that cable or not.
I just update my aspire 4745 BIOS version from 1.04 to 1.23. After that it making a big problem. If i plug in AC adapter it getting shut down. But if i turn on it without AC supply, it works perfectly. But if i try to turn on laptop after plagged AC supply, it not response anything,
I have Compaq Presario CQ42-273TU NBPC. In my laptop , if i play video , it becomes very slow. After video becomes slow, everything else on the laptop becomes slow. recently i gave laptop for service also, then also i have issue with video.
I executed the performance index and everything was over 7.0 but the Hard Drive was 3.0, I have installed the Intel Chipset and SATA drivers, what else I should do ?, in Vista x64 I got around 6.0 for the disk,
I have a lenovo z510 and i have one issue... when is plugged, it's very fast. when i unplug, everything is laggy. even when i scroll down on my facebook page, is very laggy. if i plug it in, it's very smooth and works perfect. I don't wanna mention if i wanna play assasins creed without being plugged in... is very laggy. I'm running windows 8.1 and all drivers are downloaded from lenovo website driver support... I've tried to change the profile.
On battery mode to run everything on maximum performance... but it doesn't work. same problem. I don't care if the battery runs out faster. i just want it to run fast when is on battery mode.
I've recently purchased an Inspiron 15 5000 series and have noticed that performance is unusually slow for the specs, especially since coming from an Asus G73JH that was about 4 years old.
I've noticed that in the Task Manager on Windows 8, that CPU usage never goes above 30% and although the CPU is listed as an i7-4510u @ 2.00ghz, the Speed on the Task Manager page generally sits at 0.75ghz and never goes above 0.79ghz (generally when it goes above 0.75ghz, it for a brief moment).
I've been Googling this problem for a little while now and the only person I've found with a successful solution to this problem was on a desktop and had to replace their CMOS battery. Considering I'm on a laptop, I'd imagine this would void my warranty somewhat ....
I've run the Dell Support program and all the tests pass. I've also installed all the drivers from the Dell site (including the BIOS update) and all my Windows Updates are up to date.
I have a v3 571G laptop core i7 with a geforce 640m video card. Is not the faster video card but can handle advance video games in medium to high. Every time I play any video games, with settings from medium to high, at the beginning the fps are around 34 to 40 but after 10 to 20 min of playing, the fps gets down to 12 to 20 specially when there is explosions and such. Is my laptop video card dying or is something else?
I have a Dell Inspiron 1520 and my friend has a Latitude D820.
Tonight she accidentally plugged my power adapter into her laptop. A few hours later, she noticed that her laptop indicated that it wasn't plugged in, and that's when we realized that she had accidentally used my adapter instead of hers.
Now my adapter doesn't work at all. We've tried the adapter with both our laptops with different outlets with the same problem, so we know it's the adapter. The green light also doesn't come on when it's plugged in anymore.
Did plugging my adapter into her laptop somehow screw up my adapter, or could this just be a coincidence? Is there any way to fix the adapter or at least figure out what the problem is? And if I have to purchase a new adapter, do the universal ones they sell at retail electronics stores work OK? I would order one from Dell but I'm working on a project now and I don't have time to wait for it to ship.
Just got my first laptop, and my wife likes using it on battery in her favorite chair whereas I prefer to sit it on the coffee table plugged into the outlet. So we end up charging it up when I use it, and only draining it to between 90 and 50% or so when she uses it. Is this okay to do, should I fully drain it once a month or so, am I being too paranoid about taking care of it?
first off my studio 1537 is 3 months old, so i cant return it. Secondly, when i plug in my laptop at around 70-90 percent it makes a wierd sound. So i unpluged the battery and the sound is gone. Is it a bad battery?
When I plug in an HDMI cable to my laptop the screen freezes and a black box forms around the screen. The only thing I can see is my desktop background image. Can't do anything, system is totally frozen. When I disconnect it everything works great again. What do I need to do? I'm using a HP ENVY DV7-7250us with WIN7 (64bit) installed ...
I mentioned in the subject my laptop won't start. I checked forums here and tried the offered solutions but nothing. My AC works fine, green light turns on when I plug it, and stays the same when I plug it to laptop. Laptop doesn't make any sounds...my led for battery on laptop doesn't work when I plug it on AC.
I bought this inspiron 15r 5521. Its approx 2 year old. There was warning in battery status in the PC checkup. Few days afterwards the laptop did not start up. I searched and did a hard reset..BUT when i shut it down or hibernate . again its like dead and i have to plug in the power cord for 20 min and do a hard reset to turn it on . It also happens that if i shut down while the power cord is plugged and i take it out and again plug it , it stops charging..(again need a hard reset).
I've been trying to get Vista Ultimate to run on my laptop for a while now, and every time I install using a clean installation, it runs painfully slow. If i have more than one window open its not even worth using. So I always run back to XP and I'll be honest in saying that I'm quite bored with it.
how to make it run better with Aero?
My Laptop's Specs Are Brand: Acer Extensa 4220 CPU: Intel Celeron CPU 560 - 2.13GHz RAM: 1GB DDR2 Graphics: Moblie Intel GMA X3100