20 Most Recent Compaq tc4400 Tablet PC Questions & Answers

Sorry about this.
Have you tried charging your tab to full capacity first. You need to plug it into ac mains and leave for a few minutes to allow the battery get some charge on/in it.

Secondly, I am persuaded your tablet PC is windows OS (I stand to be corrected on this please).

Was the system board confirmed fully configured/operational with all drivers installed?

Aside of drained battery in need of charge or boost; suspected fault may have to do with getting your tab PC to initialize boot sequence.

Compaq tc4400... | Answered on Oct 11, 2017

Of that vintage, could be the back light bulb have burned out or the power supply to them. I'm surprised the HHD is still running on that year model. For the price you can pick one up for on ebay I would replace the the laptop. If you ever have taken one apart and put it back together its an amazing amount of work (see you tube). And while your mashing it all back together there is a good chance it will all short out and be a wash. Put a external monitor on it does it light up? Either way I would get my files off I want off the drive it maybe the end.

Compaq tc4400... | Answered on Jun 18, 2017

This sounds interesting. Are you ordering the part from HP? If so, they should be able to provide the part number. Otherwise, you will have to get hold of a repair manual- they have the parts lists. Here is a phone number for HP Support: 800-HP invent.

Compaq tc4400... | Answered on Jan 28, 2015

First in Control Panel -> Tablet and Pen Settings, select Display Tab, then click on Change button next to Sequence. I set 1 as Landscape - Primary, then 2-4 as None.

Second, Go to Control Panel -> HP Quick Launch Buttons -> select Preferences tab -> uncheck the checkbox that says, "Enable Automatic Mode Change"

This worked for me!

Compaq tc4400... | Answered on Jan 28, 2015

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.

Compaq tc4400... | Answered on Jan 12, 2015

how can i remove bios password in hp laptop?

Compaq tc4400... | Answered on Nov 23, 2014

The tablet buttons can be disabled to stop your screen from rotating. Go to Control Panel > Tablet and Pen Settings > Tablet Buttons > select the rotate button and click change > select "None" on the drop down menu.

Compaq tc4400... | Answered on Oct 17, 2014

How do you know the battery is good? does the multimeter really read more than the battery should give, according to what is printed on it?
A 3,7 volt battery, should give at least 3,8, wham not connected. A 7,2 at least 7,4. Because the printed voltage should be on the connector, when you are discharging the battery.

When your charger is blinking, it could indicate the battery is not well. The Ri can be to high or something else, is wrong, and that is ht the charger won't or can't charge.

Compaq tc4400... | Answered on Jul 23, 2014

Do you have a disc in one of the drives? DVD, CD? Remove the disc and try to boot again. I haven't seen an error code like this since early Windows. If this doesn't work contact Compaq customer service.

Compaq tc4400... | Answered on Apr 15, 2014

According to the following link...looks like you would have to find/get a Docking Bay to hook up an External CD/DVD ROM in order to have a better chance of putting a operating system back on it.


Compaq tc4400... | Answered on Feb 09, 2014


this is where your find the moel drivers for tablet , there are two available , so please read before installing.

Compaq tc4400... | Answered on Nov 28, 2013

try holding the power button for 30 seconds

Compaq tc4400... | Answered on Oct 25, 2013

With the power off turn on the laptop and press the "F10" key to enter setup(BIOS)

Compaq tc4400... | Answered on Jun 22, 2013

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