Compaq Presario CQ40-406AU Keyboad Replacement Issue!

I have the service manual for CQ40 but its definetely not the exactly same model because lots of things are different between the manual and my laptop. I have unscrewed and removed everything at the bottom ( besides WLAN and RAM modules ) but the keyboard/keyboard cover won't come off. I tried lifting the keyboard upwards alone and it didn't help, then I went to remove the cover and it won't move either. I tried lifting it with hand, moving it in forward direction to try to get it to disattach from any locks and nothing helps.
Any ideas how to remove the keyboard/keyboard cover from this laptop? Could really use some help right now!

If you know complete model/product number of your Compaq laptop, you can find list of available parts including complete chassis info over here
This list is also available in Service manual found over here
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Compaq Presario cq40-625TU screen fading to blue when opens on full lid

Today when I open up my laptop's screen starts fading at full angle. But alfter little closing the lid every thing is fine. Again opening the screen lid at full. It again starts fading with blue color. What's that problem .

Hi , Thank you for visiting the HP Forums! A great place where you can find solutions for your issues, with help from the community!
I came across your post about the Notebook, and wanted to assist you! I have looked into your issue about your Compaq Presario CQ40-625TU Notebook and issues with the screen flickers. Here is a link to a document that will help you troubleshoot the image on screen flickers, has lines or distorted colors. Have you connected a monitor to the Notebook to check if it happens there as well? Please let me know how this goes. Thanks.

Sound Problem in Compaq Presario CQ40-108TU

I've Transcend 2GB DDR2 667 memory and put it in my laptop (Compaq Presario CQ40-108tu). It read the whole 4GB memory coz I'm using Windows Vista Ultimate 64-bit but it doesn't have an audio. I've try to troubleshoot it, first try it with only 2GB memory and it does have audio. Then i try it with 3GB memory and it has a audio. Then i try switch the other 2gb memory and repeated what I've done and it does have an Audio. Then i've try again with 4GB but it really doesn't have audio/sound.
If you know the how to fix this problem please help me...thx

Hello please anaszen777,
Please take a look at this page, which contains troubleshooting steps to determine the cause of your issues.. Please let me know if it helps.
Good luck!
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My Compaq presario CQ40 battery

Sir,
I got a Compaq presario CQ40 notebook. My battery displays ....plugged in, not charging....I guess reason is that my battery has dried up....so i would like to ask that is it a safe using that battery for few days .....or it has chances to explode.......its urgent . also i would like to know the price of replacement of new battery.
,Thank You
~Shubham

If your power adapter is rated for 90Watts, then my next thought would be to try a different 12 cell battery from a different manufacturer. Most (if not all...) newer batteries have a small chip inside that relays information back to the charging circuit in your laptop. This is what "tells" your laptop charging percentage of the battery, battery status and how much to charge it. Either the new battery has a defective chip, or it's missing... At least thats what it sounds like to me.
You should have some type of guarantee from the website if battery is DOA from the start.
Regards,
Louis

Compaq Presario CQ40-106TU Strange noise

hi every HP products owners,
I’ve bought Compaq Presario CQ40-106TU notebook 3 weeks ago, till now, when I play music or movies, every 5~6 minutes I hear a short distorted noise thru earphone or speakers.
I have uninstalled and reinstalled sound driver. I have fully recovered my notebook, but this issue is still persisting.
When it is mute or I don’t play music or movie there is no noise. in case of all kind of music or movies, online, radio, playing by all kind of media player same as windows media player, jet Audio, winamp, i have this problem.
the notebook has a IDT High Definition Audio CODEC sound system. in sound card property it is mentioned that sound system works properly, but this problem really makes me mad.
The noise sometimes interrupts the music for an instant.
What can I do? Is it hardware problem?
I appreciate anykind of help or instructions.
Varshavian
This question was solved.
View Solution.

Thanks for your kind attention, I have sent my lap top to HP repair center and now it's working properly. it was a hardware issue.
Message Edited by Soju on 02-18-2009 05:00 AM

Compaq Presario CQ40-327TU Notebook PC Display problem

Hi,
My product is Compaq Presario CQ40-327TU Notebook PC originally with Windows XP edition. Recently I installed Windows 7 in my laptop from USB pen drive. Installation went fine, but it does not ask for C drive format. I installed in the C drive where Windows XP installed previously . After installation of my laptop working fine. Some times the screen goes blank (black) and come back after few minutes and in notification area it shows "Display driver Intel Graphics Accelerator Drivers for Windows 7 (R) stopped responding and has successfully recovered." like that I am getting a notification. In my system information, I checked it shows Windows 7 in OS. It happens only when I toggle to different windows or applications. I checked display adapters in device manager and it shows "Mobile Intel(R) 45 Express Chipset Family (Microsoft Corporation - WDDM 1.1)" . When I tried to update display adapter it showed already uptodate. Can I expect some solution for my problem here. Also after OS installed I found Windows.old folder in C drive. Can I removed that folder?
Thanks in advance.
Regards,
Venugopal

This is NOT official HP Customer Support and I, as most other persons on this forum, do not work for HP. This is a peer-to-peer user supported forum for HP consumer class products. HP maintains no official presence on this forum and it is unlikely that HP will respond in an official capacity. Any reply from a HP employee represents their own opinion and not that of HP's.
It appears that your computer meets the minimum requirement for installing Windows 7. Please download and run the Windows 7 Upgrade Advisor to confirm this before attempting to install Windows 7.
Based on the specs for your Compaq Presario CQ40-327TU Notebook, this model shipped from the factory with Windows Vista installed. Here is the Compaq Presario CQ40-327TU Notebook PC Drivers page for your computer. HP has provided only Windows Vista drivers for your computer.
You should be using the current BIOS version before upgrading to Windows 7.
Please see the General Windows 7 Upgrade Guide for HP Laptops by CherylG for specific steps to be taken when installing Windows 7 on your computer. This guide will also direct you to the proper drivers needed for your computer to function completely under Windows 7. Please refer to "Part 1 - Models Level 1" for information specific to your model.
Please use Intel® Graphics Media Accelerator Driver, Windows 7*, Windows Vista* (exe) for a 32-bit OS and Intel® Graphics Media Accelerator Driver, Windows 7* 64, Windows Vista* 64 (exe) for a 64-bit OS. And YES, you can delete the "Windows.old" folder.
Please post the Windows Device Manager's "Hardware Ids" for any additional missing or unknown devices on your computer, as shown in the example below;
If you have any further questions, please don't hesitate to ask.
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Audio system is not working in my laptop compaq presario CQ40-601TU, VQ969PA

system shows error code 39 in both IDT high definition audio codec and Intel (R) high definition audio Hdmi. The system operated with windows 7. The model is compaq presario cq40-601TU, VQ969PA#ACJ.

Install HP Support Assistant from here and run a health analysis to install all drivers for your system.
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The battery of my hp compaq presario needs to be replace,where can i buy it and how much?thanks,..

the battery of my hp compaq presario needs to be replace,where can i buy it and how much?thanks,..

Hi,
There are many Compad Presario models/laptops out there, you need to buy the right one for your machine. Here is a place, you can buy from them or using as a guide (cost) to buy elsewhere:
http://www.hp-laptop-batteries.com.au/compaq-laptop-battery.htm
Regards.
BH
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Unable to boot Compaq Presario CQ40-340TU

Hi I have a Compaq Presario CQ40-340TU laptop. My problem is that I can't boot. I already change the harddisk since there are bad sector. Then when I connect my new hard disk, the laptop can not detect it, so i try connecting the new hardisk on my desktop, and installed Vista for the OS. When I return the new harddisk with installed Vista OS, I still can't boot the laptop.
I also try to boot the new hard disk in my desktop,it works fine. So i think there's some problem on my laptop?
Anybody know what seems to be the problem? Please help

check whether the HDD is dtected in the BIOS or not ! do that by tapping F10 while the NB boots...if the hdd is not detected then u need to get another hdd....if the hdd is detected then run the self test.....if no error comes then take the NB along with the HDD and ask for the compatibility at the store...
sid
although u am an hp employee i speak for myself and not hp
sid.
although i am an HP employee i speak for myself and not HP

Compaq presario cq40-425TU battery

My compaq presario cq40-425TU battery is not getting charged. The icon near task bar says "Plugged in, Not Charging" when I plug in the adapter. What can i do? Please help.

Hi,
Hope the following articles help:
http://www.pcmag.com/article2/0,2817,2404104,00.asp
http://www.avinashtech.com/computers/solution-battery-plugged-charging/
Good luck.
BH
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Problem Audio compaq Presario cq40 506TU

Problem Detect Audio compaq Presario CQ40-506TU

already select OS but only this appear
Compatible software and driversThe following software and drivers are compatible with your product and the operating system Microsoft Windows XPDriver - Keyboard, Mouse and Input Devices Date Version Previous Size » HP Quick Launch Buttons 05-2009 6.40.17.2 » Version: 23.27M Driver - Network Date Version Previous Size » HP Wireless Assistant 06-2008 3.00 K » Version: 3.22M
How about other driver ? where should i get it?

Compaq Presario CQ40-340 TU battery problem

Hello ,
I had a battery problem it says, consider replacing your battery. And it sucks, it already ended the warranty.
it was i think 1 year and 1 month when my battery had this problem. It charge a little bit after 30 sec to 1 min my laptop turns off. Its unusual i think my battery only last a year. is there latest battery recall on Compaq Presario batteries?
my CT: is 6AQEAC ***********
THANKS
Regards,
bk

See this
http://bpr.hpordercenter.com/hbpr/

Compaq Presario C700 series notebook - C757EA Issues

Hi, I'm currently having a problem with my laptop, it's a compaq presario c757ea (it says c700 on the laptop itself) it will not receive any power or charge the battery. I don't want to get a new laptop because it will be too much money.
I had problems with it previously involving the hard drive failing 3 times and when i had got it back when the hard drive was replaced the third time it worked and charge but an hour after that it stopped charging and only would run off the battery.
I phoned up HP in the past and they've just told me to take it to PC world, but PC world are garbage because they say you might as well get a new laptop, they will not listen to me, all i want is a courier out to come and collect the laptop.
I've tried entering my Serial and product number on the HP website but it gives me this:
"We were unable to find any results that match the information you entered. You can either try a new search, or get further assistance from an HP Support agent. For a new search, please click the “Check again” button below, and then make sure to enter the correct product and serial number. Please see the “How Do I Find My Product Number and Serial Number?” information on the right side of the Warranty Status Check page, if necessary"
I've entered them correctly and i still get the same message.
Is there any other way in which i can get a courier sent out to collect my laptop? i would really appreciate it.
If it helps i had the charging problem since around August 2009.

Is there anyone out there at HP in which is able to give me information in getting a courier out to come and collect my laptop?

Failure in Flashing the BIOS of Compaq Presario CQ40-109TU

Good day to all.
I am upgrading my Compaq laptop from its default Windows Vista Home Basic to Windows 7 Ultimate 32-Bit. My laptop model is CQ40-109TU.
I freshly install the Windows 7 and download all the recommended drivers and softwares from HP/Compaq site for my laptop model with Windows 7 32-Bit.
After finishing the installation of Windows 7, Avira Antivirus and Windows Updates, my laptop starts up successfully. But after I install the recommended BIOS version F.55 A (sp45765.exe), my laptop hangs at start up when Compaq logo is displayed, and it does not respond in any keys I press (like Esc, F8, F12, etc.) to view the BIOS configuration. It only beeps after pressing a key several times.
Also, I notice that my laptop does not charging too after the laptop restart. The LED on AC adapter has light, but the light where the adapter connects to my laptop is off. But there is a blinking light in the thunder icon while the charger is connected to my laptop. So, the charger is okay and supplies electricity to my laptop. But why the light, that indicates the laptop is charging, is off? Currently, the battery is drained already.
My laptop's previous and working version of BIOS is F.12, and I have no backup for that.
I run the BIOS setup (sp45765.exe) just by clicking the file in Windows-mode not in DOS-mode, just what was said in the directions. I think, power interruption is not the cause of the problem because the charger or AC adapter is properly connected and the battery is fully charged during the upgrade.
What happen to my laptop? Do I miss something during my installation process, or the BIOS version F.55 A does not really compatible to my laptop? Is there any workaround for this problem? How can I restore my previous BIOS version F.12?
I am very hopeless, and I don't know what to do. Please help me.

Restoring F.12 might be a good move.The guys at My Digital Life have tested a procedure using usb flash disk:
http://forums.mydigitallife.info/threads/13095-Undocumented-INSYDE-BIOS-recovery-method
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Battery charging problem in compaq presario cq40-330tu

My laptop battery is charging only 1-2 mins after that ac adapter stops and laptop totally runs on battery but when I remove the battery and run laptop only using the ac adapter it runs well and battery is also new can anyone please solve this problem?????

Hello please anaszen777,
Please take a look at this page, which contains troubleshooting steps to determine the cause of your issues.. Please let me know if it helps.
Good luck!
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Compaq Presario CQ40-406AU Keyboad Replacement Issue!

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