Question about Compaq tc4400 Tablet PC (RL875AW#ABA)

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TC 4400 The machine is full of power and just shuts off. Has anyone seen this before?

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  • keabbott
    keabbott Oct 08, 2008

    My TC 4400 Tablet PC is full of Power but shuts down ever so often. Very weird. Any ideas?

  • Anonymous Oct 10, 2008

    My HP tc4200 tablet pc is shutting down within 30 seconds to 5 minutes after turning it on. It does this with the battery or with only the cord powering the system. It is sudden and when you reboot, there is no sign of errors or a loss of power.

  • tvfahlberg Apr 20, 2009

    I may have the same problem. In my case the computer keeps running, but the LCD backlight shuts off. If I restart the system (by holding down the power button off, then back on), the backlight will come on normally.



    It only happens when I've been running on battery for about 20 minutes. It started happening after I added the extended battery. I think it may be happening at the point that the main battery is exhausted.

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  • 14 Answers

The THERMAL PASTE which bonds your laptop's heatsink and cpu together is not good. It will not obsorb the heat good enough, which causes your laptop to OVERHEAT from time to time... Have someone re-apply a new thermal paste on it then it will be fine...

- I've worked on laptops and desktops for 10+ years. Take my words for it.

Posted on Sep 26, 2009

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Laptop hp compaq tc 4400 is not charging , during adapter connected to laptop and turning power/standby led ... it doesnt switches on, instead battery charging led blinks 4 times, and doesnt turns on, so...


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.

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You can actually short out the on/off circuit with a flat head screw driver. I have to do this until I can find somewhere to purchase a replacement sliding switch to attach to the new motherboard which I have waiting to be installed. Alternatively purchase a cheap docking station off ebay

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May 26, 2009 | Compaq tc4400 Tablet PC

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Hi i need driver o software pen ( compaq tc 4400 XP )


I belive you will find what you are looking for on this page please follow this link to download your touchpad/PEN driver >

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=1849071&prodTypeId=321957&prodSeriesId=1847962&swLang=8&taskId=135&swEnvOID=1059#11318

just copy that link and paste it into your address bar at the top of your internet browser then hit search or press enter.

hope this helped you but if it does not help please do not hesitate to re post your issue and we will keep trying to solve it for you.

Thanks Reguards: PC Pro

Dec 15, 2008 | Compaq tc4400 Tablet PC (RL875AW#ABA)

1 Answer

Compaq tc 4400 battery does not charge


You may need a new battery... Somehow the way to test this is to try charging it on another laptop of the same model.

Dec 14, 2008 | Compaq tc4400 Tablet PC (RL875AW#ABA)

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Screen brightness


Another way to adjust the screen brightness is to hold down the Functin key (blue, Fn) and then repeatedly press the up or down arrows (which also show the symbol for screen brightness on the keys in blue.)

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