20 Most Recent Compaq Presario CQ40 Series Laptop Charger (1300679LMD0015542) Questions & Answers

it turns on the it turns off just like that?

Hi itap, some movie need other tools call codec. Did you try install codec to run any type of movie? Movie type like a mkv, mp4, mpeg, avi must install codec code to make it work. Here i share a link to download a codec code. Codecs com Downloads for Lite Codec Pack 10 2 Full Standard and Basic

sounds like driver and software issue.. go to device manager make sure the webcam driver is properly installed, if not go to Compaq website or google search for the device driver..

You tried to reinstall the keyboard and touchpad hardware parts? Have you had ANY damage? Spill? OS upgrade? If you replaced the hardware is the ribbon cables connect properly?

Go for the link:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01970581&cc=ad&dlc=en&lc=en&jumpid=reg_r1002_usen#N67

Hi Purabi,What were you doing when you got the error codes??This info is required before I even attempt to answer your query.Cheers,Peter

there is option in the keyboard for it

if your computer came with a motherboard disc the sound drivers could be on it

click start control panel administrative tools computer management device manager scroll to sound video and game controllers you might see a yellow question exclamation mark? ! or a red X Right click to reinstall drivers

click start control panel sounds and audio volume advanced speakers make sure you have selected the

(appropriate speakers) also audio you will find 3 drop down lists make sure you have selected the correct speaker settings there

click start control panel sounds and audio devices select advanced there might be a tick in the mute box untick it

if his does not fix the problem

click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar for any further volume control settings you will need to right click on the speaker volume icon system select adjust volume

click start control panel sounds and audio volume advanced speakers select the appropriate speakers

from the drop down list or navigate to the device manager scroll to system devices + to expand system speaker right click properties then select use this device (enable) also you might check

the speaker plug/outlets is usually at the side of the laptop you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good with no dust as dust causes static electricity

clean your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer

http://download.cnet.com/2000-20_4.html

on the home page you should see a search tab just type in what you are looking for

IE: motherboard name audio driver you might have to try a few times to get it right

for windows 7

click start right click on computer select properties then device manager scroll to sound and video game controllers if you see a yellow question/exclamation mark or a red X the driver will need to update drivers

click start right click on computer select properties then device manager scroll to sound and video if you right click on sound and video then on high definition audio device select update driver software

click start control panel hardware and sound manage audio devices right click on your speaker select configure speakers

right click on the speaker icon in the bottom taskbar you will see an array of options select

playback devices make sure it has a green tick and the correct speakers are selected

be updated if you computer came with a motherboard disk the drivers could be on it although

once speakers are connected widows 7 should automatically update the drivers

click start control panel hardware and sound manage audio devices playback you might have to set a default go for via high definition audio then right click on speaker

you might have to configure them then select properties you will see tabs general level in this tab make sure your settings are loud enough also enhancements and advanced from the drop down

list in the advanced tab select dvd quality or another then apply

hope this helps

Click on the link below and it will show you how to do it step by step. It is very good instructions with photos. Here is the link:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00820047&lc=en&dlc=en&cc=us&product=4030438

You can try cleaning the laser lens with a laser lens cleaning kit, but if that doesn't work you'll probably need to replace it.

there is some loose connection in motherboard which caused this hang problem, you need technical assistance to fix this issue

Hello,how long have you been using this player? I suspect the laser (lens) of the player. I think the laser (lens) is weak that's why it cannot read data/files on DVD discs.To confirm if actually its a laser problem, insert an Audio CD into the player and see if will play. If it plays, then obviously, your laser (lens) is weak. But if it doesn't play Audio CD, then it might still be the laser (lens) or a mechanism problem.Get a lens cleaner, use it to clean the lens. If that doesn't solve the problem, get a screw driver, open the player's cover so that you can gain access to the lens, use a cotton board to clean the surface of the lens. This should clean dust or dirt that might be on the lens.If non of the above solves the problem, then know that you need to replace the laser to a brand new one.To replace the lens, remove the bad laser, use it as a sample to get exactly the same type and do the replacement. Note that replacing a laser (lens) needs a professional touch, so if you cannot replace the laser, get it to a repairman to fix it for you.Once this us done, your player will play all DVD discs again.Regards.

This is usually a sign of either a bad LCD screen cable, a bad LCD screen, or a bad display adapter.
If you connect an external monitor & you get a picture without these red horizontal lines, then your display adapter is OK.
Diagnosing a bad LCD screen cable or a bad LCD screen requires that you disassemble the LCD screen panel, & swap them one at a time with a matching part. This way you can identify which part is causing the problem & replace it.

I would recommend taking it to a battery retail store or laptop specialists to have the charger and battery tested. It can be very expensive to purchase either a battery or a charger or both if not needed. Have it tested to verify the problem device ....then purchase as needed.

Ifthe laptop battery is more than 3 - 4 years old then the battery could be wornout. Rechargeable batteries have a finite number of charge and discharge cyclesand will lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up atall. ORThe battery shows a 100% charge but when the adapter is disconnected thebattery drops off to zero capacity in a very short time. Ifthe battery drops to an unacceptable charge level then the battery needs to bereplaced. Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Before you make a decision about the next step, maybe you would like to know why the laptop charger is not working. Here are some commonly found reasons for this problem.

• You have been using the wrong laptop charger for your machine, or someone else has been using your laptop charger for another machine. This may seem like a harmless act, but it affects the battery on your laptop, and charger you are using as well.
• Your laptop battery has become weak and worn out from excessive use. Due to this the battery is not charging at all (or charging very slowly) when you plug in the charger. In this case there is absolutely nothing wrong with the charger itself.
• The wire of the laptop charger has got a distinct curve at one point, and this is restricting it from transmitting power. You need to look out for such bends in the wire, as this will ruin the efficiency of the charger in no time.
• This may sound elemental and stupid to some, but it does happen to many people. Maybe you are simply using the wrong laptop charger by mistake, or maybe you have failed to switch on the power switch. Check both these things to be sure.

Any of these potential causes could be the reason behind your laptop charger not working. As a result of these, either the mains power lead of your charger may be damaged, or the power supply unit may be damaged, or maybe the lead itself is damaged or broken somewhere, or some circuitry inside the laptop is damaged, and not responding to the charger. It's hard to accurately tell which of these problems could be the real cause of your laptop battery not charging, without physically examining the machine.

Solutions and Answers

Now if you are well versed in computer hardware you can attempt to fix this yourself. Most people cannot do this, and it is advisable for them to visit a computer repair shop instead. They will examine the laptop charger not working problem, and suggest some suitable remedies for it. Depending on your budget, you can choose an option that suits you and simultaneously solves your problem. Here are some recommended solutions.

• Buy a brand new charger which will definitely solve your problem of charging the laptop for a long time.

Compaq Presario CQ40 Laptop Charger

• If you're hesitant to pay that amount, you can try and purchase a second hand laptop charger from eBay.
• Get your's repaired and pay the repair shop the fees that they charge.
• If your warranty is still valid, you can simply get the laptop charger replaced.

Reference: http://www.buzzle.com/articles/laptop-charger-not-working.html