HP/Compaq :: Nw8440 LCD Randomly Forgets To Turn On
Feb 5, 2010
I recently had to have the motherboard replaced on my HP Compaq nw8440 due to a bad DMA controller. About a week after I got the board replaced, I turned the machine on one day, and the screen was split, squished and doubled. The HP logo showed up twice; once on the top half on the screen and once on the bottom half of the screen. The GRUB menu and the XP boot screens were the same way, but once windows was up, everything was back to normal!
The next day, I turned it on, and the screen wouldn't come on at all. Everything SEEMED to be working fine (judging by the HD activity), but there was no screen. I pulled the battery, held the power button down, and everything was fine again for about a month.
Last week, I turned it on, and it again forgets to turn on the screen. This has happened two more time since then. Sometimes the backlight comes on; other times, it's totally dead. Pulling the battery and holding the power button fixes it every time. Does anyone have any ideas as to why it's doing this? Will reflashing the BIOS help?
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Jan 5, 2009
question for those that are knowledgeable in the area of upgrades. I have a nw8440 with a T2400 with 2 GB of 266MHz RAM and a 60GB HD. I would like to change out the HD for a WD Scorpio 320 GB and change out the 2GB of RAM for either 2GB or 4GB of 667 MHz, yes I am well aware of the 3 GB limit for 32 bit OS. As for the CPU I would also like to change over to a T7600 intel chip, the sockets are the same.
Is there any thing different in installing a new OS in this laptop compared to a desktop? In my limited time here so far I have picked up that I need all the drivers first before I install the OS, is that correct?
Have I forgotten anything? The HD and RAM would be first, with the CPU to come later depending on funds available.
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Mar 21, 2009
I felt that my notebook needed a ram upgrade so i checked online and it said that i could upgrade up to 4 GB. So i bought Kingston HyperX DDR2 4 GBset with two matched 2 GB chips.
I changed ram and then booted up in Windows Server 2008 x64 and checked that is found the hardware upgrade and it said 4,00 GB Ram, but when i checked taskmanager it only used 3,5 GB. So i booted up an Kubuntu 8.10 x64 Live CD and checked there but now it used 3.3 GB.
I flashed it with the newest Bios before doing the ram upgrade.
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Oct 26, 2009
i got some problems with my notebook getting too hot.
It even crashed when i was running Ubuntu Linux because of too high temps.
First i tried the Undervolting guide here: [url]
But even now my notebook reaches a cpu temp. of 90+ C.
So im wondering if someone haves the same or a similar notebook has some advice on how to open the notebook so that i can clean the fan.
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Sep 15, 2009
Lately the system boots with no profile. I have to do a system restore to get back to normal. Is there a motherboard battery on these machines? It's what I would suspect on a desktop but can't find any reference to it.
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Nov 10, 2009
I just got a HP DM3T and so far it is great, except for one thing. For some reason when on battery power the brightness seems to randomly darken (not turn off) and then it will lighten back up when I go to a different program or page. I am sure this is some sort of power saving feature but it is driving me crazy. Is there any way to disable this feature so when on battery the screen stays the same brightness? I apologize if this issue has been covered already, I must not be searching with the right terms. . .
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Apr 5, 2009
I've only had my HP Elitebook 8530w for a few months now and is my first laptop. I love just about everything about it. However: Recently I have had problems with the screen going out on me every so often. It just randomly goes very dark, to the point where it looks like its off, but I can still see VERY slightly whatever I was working on before. Has anyone experienced this and possibly knows what could be going on? (it just did it again. 3 times in a one hour sitting)
Whatever anyone can suggest would be awesome. I'm not to savvy about laptop hardware and such, so i'm a little ignorant when it comes to troubleshooting this issue,
I forgot to mention. Here's some specs.
Core2 Duo T9550
15.4" WUXGA
GFX nVid FX770 512
RAM 4GB DDR2 2DM
HDD 250G at 7200rpm
standard 8 cell battery
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Mar 16, 2009
i just picked up the new laptop (specs below in sig) and have noticed a few hiccups.
I just got it yesterday, and when initially setting it up, that silly "HP start up" software seemed to lock up more then once (with the silly hands moving around n blah blah blah.) Well eventually had to restart and with that crap out of the way, set things up normally. Got everything updated. Wifi's working well, all windows updates out of the way, etc.
However during all this 2 times my computer randomly went into hibernate mode. It wasn't like I'd left it idle for long. I mean i may have left it go for a minute or two w/o interacting with it (while it was plugged in.) I had also altered the power settings to not go into sleep or hibernate while it was plugged in , which it was.
I could tell it hibernated by the start up screen saying "resuming windows." Well as an experiment after playing around with power settings and so forth, i left it on all nite while plugged in. In the morning today it was still on and running fine.
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Mar 7, 2009
Today i upgraded my dv6500t again. This time i put in an OEM t8300. After putting it in the bios reads it and it runs fine ( Im on it right now ). Anyways i will be using it and it idle's nicely at 40*C to 50*C but randomly it will jump to 83*C for core 1 and 97*C for core 2 the fans will spin full speed then it will drop down right back to normal. Anyone have any idea i am running the most up to date bios F.59.
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Feb 15, 2009
if anyone has had sound issues with their DV5? I have the current bios F13 and have un-installed and reinstalled sound drivers and such. What is happening is the sound will randomly make a static boom noise and then go away and then do it again.. i have checked my external speaks and have even replaced them thinking it was them.. it is not since it is happening with my onboard speakers as well. So this static boom sound is a constant annoyance along with music sounding rather off/staticy..
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Mar 21, 2009
I had a dv2700t, with a problem I described in this forum some time ago... I didn't manage to solve the problem and HP couldn't/wouldn't "fix" it... the problem was that the wireless... caused blue screens/crashes randomly while using internet (downloading large and small torrent files for example) this happened ONLY when using WIRELESS connection.
I now, after nagging on HP for months, own a dv7-1290.
Imagine my surprise when I get the same problem...the only difference that I've been able to discern between this problem and the old problem is that this computer doesn't crash the UBUNTU live cd that the other computer managed to do......
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Jun 10, 2009
if anyone has had the same problem as me with the HP HDX 16. Randomly, even as I am typing here, the volume bar (with treble, bass etc) will appear on screen and will increase/reduce very quickly as if im pushing down on the touch buttons, this stops me being able to type, sometimes crashing the computer.
At the same time, this fault also occurs for the wireless LAN button to the far right, which will randomly disable (turn red) as if i'd touched it, sometimes causing the desktop to crash but more importantly causing me to lose connection and have to reconnect on a frequent basis.
I've had the notebook for over 6 months, and while i did have this occur on very rare occasions, since a couple days ago it has increased to a point where it happens all the time, including after a restart. I have tried searching through google to see if the problem is known, and i have seen a similar account on a customer review website. I have used HP health check and followed the updates supplied including that for the touch smart buttons and a BIOS flash.
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Mar 25, 2009
I just got a HP Pavilion dv9700 Notebook PC but it was refurbished and no instructions. How do I turn on the net cam?
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Feb 26, 2010
I have a hp probook 6540b from work.
Yesterday when i went out of work, i closed the lid put it in my backpack and left it there until this morning.
Today when i tried to turn it on nothing seems to happen except the battery light that is blinking when i press the power button.
It blinks fast like 5-7 times changing color between blue and orange, and then just turns off.
I tried removing the battery and turning it on with just the AC adapter - same effect, same blinking.
I tried just with the battery - nothing at all (not even the blinking)
With the battery and the adapter together - blinking.
I have a feeling that yesterday it didn't go to sleep when i closed the lid and what happened is taht it was working closed inside my backpack until it either fried something from the heat, or the battery ended from the fans blowing full on.. But that's just a hunch..
meaning of the blinking battery light ?
Or maybe has a service manual that i can check ?
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Jan 17, 2009
I hate the HP logo on the lid that is lit up. Anyone know of a way to turn it off? Its not lit by the LCD backlight since it stays on when the lid id closed and the screen is off.
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Jul 23, 2009
my brothers been having problems with his HP comp, im not exactly sure on model, ill find out tomarrow. but his problem is, sometimes his screen will like, turn off. the laptop itself is still on, audio will go through and all, but the screen is just black. it doesnt happen too often, like once a week.
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Jul 12, 2010
I have a x201 cto using 64bits Win 7. The wireless adapter is intel advanced-N 6200. However, I found my wireless always turn off suddenly and I can not turn it on anymore (even using Fn+F5) until reboot.
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Jan 6, 2015
I installed drivers for GeForce and Nvidia, but when i try to play e.g . Battelfield 4 then laptop use only one graphic card (GeForce 755). How could i turn on second card during the game ??
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Dec 3, 2009
My HP zd7005qv laptop stopped turning on a little while back, and at first I thought it was a failed HDD. However, I also noticed that when I plug in the power cord, the lights would blink only for a brief moment then immediately go off. So I started fiddling with the cord and I got it in a position where the lights would complete their start-up blink, and when I tried to turn it on it actually started booting. But it stopped as soon as I moved the power cord again.
So I figured that the problem was a bad power jack.. it's pretty common from what I hear. I disassembled it, desoldered the power pin, and soldered a new one I bought off eBay. Now there is absolutely no problem with the power jack but the laptop still wont turn on. I'm afraid I may have screwed something else up while disassembling and reassembling the laptop.
When I press the power button, the lights at the top come on, I hear a light whining buzz and then all the lights shut off. I tried removing the RAM sticks, I even remove the HDD and the same thing happens no matter what. I tried turning it on with just the AC adapter, and I even let the battery charge a bit to try tuning it on with just the battery. I think I may have killed my processor..
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Jan 8, 2010
Most of the time I use my Envy 15 on my desk and hooked up to an external monitor. In this mode I do not use the laptop screen, so have it set to just display on the external.
However, to turn on the laptop obviously I have to open it up and press the power switch.
What I want to do, is turn it on whilst keeping it closed. I used to be able to do this with my Dell Latitude E6400, as it has an option in the BIOS to turn on automatically when AC is connected. Thus, when I turned it off I would simply unplug power, then to turn it on again would just plug the power back in without having to open lid.
I have looked, and the Envy 15 BIOS is very limited and I don't see a similar option. Is there possibly another solution to get it to turn on when closed?
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Aug 5, 2009
Laptop is a hp pavilion dv2000 laptop.
Went to turn on the laptop and walked away. A minute or two later come back and laptop is not past the BIOS, and a screen talking about a laptop being ran until the battery drained last time it was on. I didn't get a chance to finish reading the screen because the laptop restarted. Nothing shows up on the screen after the restart. I was running off the AC adapter when this happened.
Situation now is pressing the power button causes the power button, media quick play bar. Power notification light , light above mouse pad and the wireless slider to light up. If the AC adapter is plugged in the charge light will light as well.
I also hear a fan and i think the HDD. The HDD light doesn't light though. Nothing will show on the screen. stays black. I have tried powering it with AC adapter only, charged battery only, and with a charged battery and AC adapter.
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Nov 14, 2009
Is there any way to turn down the tick tick sound that the volume drag button makes?
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May 31, 2009
This is an old notebook. A Compaq Presario 1200 Series notbeook (1200 XL-101). When I plug in the power cable, the LED lights up, indicating it's plugged in - however absolutely nothing happens if I hit the power button.
I have tried this with or without the Battery in it. In the past this notebook was able to turn on WITHOUT any battery in it if it was plugged in; being directly powered by the power cable.
Does anyone have any input one where I can begin to fix this? I don't want to bring it in to a shop; I'd rather fix it myself. I'm handy with hardware so I can open and replace parts. I just don't know what is wrong with it.
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Jun 29, 2009
i have HP pavilion dv9381ae,when i turn on i get only black screen before that i didn't have any problem with my notebook. also when i click quick lunch button my notebook turns on.
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Oct 19, 2009
I have a HP Compaq 2230S business laptop, but this question could be put to any HP laptop. The fan is constantly running when the laptop is plugged into the power outlet, but as soon as I pull the plug to run on battery power the fan powers down and stops. I re-plug the laptop back in and the fan kicks up again.
This is not good as I almost burned myself when I picked up the laptop after an hour sitting on the table on battery power. The hard drive is right beside the processor, so the laptop gets really hot.
Vista x64 Ultimate is what I'm using at the moment and my power scheme calls for 1% minimum and 100% maximum CPU on battery power.
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Oct 3, 2009
My notebook (CQ40-314TU) recently encountering a strange problem: When I turn it on, the caps lock led blinks continuously. The screen is black, the power led is on but the HDD led is off. Everything is OK when I press Power button and turn it on again but it repeat next time. It happed randomly and I don't use battery at that time.
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Oct 28, 2014
i have a Compaq Mini 110 that i formatted, but after that i can't turn on the wifi switch, i've installed more than five drivers, still no result. i don't know if it's a hardware or a software problem!!here are some pics to illustrate:
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Sep 20, 2014
I bought new hp pavilion 15. i notice many time when i turn on or off my charger, screen turn off for few second then after few second screen turn on.
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May 13, 2010
I run into my 1st issue in 4 years of ownership. when I turn on my computer (pavillion dv8305) it turns off while booting. Now my battery has been dead for like 2 years but I always have it plugged in anyway when using it. Let's just say if it can't be fixed to turn on how can I access my info on the hdd? I have documents and some files/programs I need.
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Mar 12, 2009
how to turn off the logo light? Cause my notebook's cover is facing the wall, no point for it to light up..
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