2740 - Dead Zones touchscreen - blind spots keep alternating from consecutive cycles of power

Hello

I return my 2740 two days and since I am faced with the question of areas inaccessible to the corners of the touch screen.

To explain further, I'm numbering of the corners as 1,2,3,4 from the top left and go elsewhere (with the display in normal mode for portable computer with keyboard open).

I'm dead in 3 corners (2,3 and 4) zones. I can drag and drop the slider to one of those corners, I can do the selection rectangle on the desktop windows (but of course from a position away from these corners, when even it means that they are not totally dead), but I can't save any tap (i.e.. clique) on these corners for about 1 to 1.5 cm. considering that, in the corner 1 works perfectly.

What makes this problem even more strange is that these dead zones alternating custody after consecutive/recovery stops after sleep, that is.

After stop/standby #1: blind spots are # 2,3,4

After stop/standby #2: blind spot is no. 1

After stop/standby #3: blind spots are # 2,3,4

After stop/standby #4: blind spot is no. 1

After stop/standby #5: blind spots are # 2,3,4

After stop/standby #6: blind spot is no. 1

And a normal restart has no effect on blind spots, there must be a stop or a sleep-CV. Given that each of the corners work, but not all together, makes me very doubtful that this could be a hardware fault.

I already tried the following hotfixes mentioned by people facing similar problems with their 2740:

1. different "Wacom Digitizer Driver" published by HP, April 30, 2010, June 23, 2010 and November 22, 2010, respectively.

2 reloaded Windows 7 Professional 64 bit from scratch and I tried all kinds of drivers, even those of Wacom Web site.

3. power cycled my unit, that is. has out the battery and ran my unit from the mains without the battery.

Any information would be extremely useful and appreciated. Others who are facing similar issues well to respond to this thread as well.

Thank you

Mrinal

For reference:

Corner #1: Top-left

Corner #2: Top-right

Corner #3: Down-right

Corner #4: Left-bottom

I was able to completely solve the problem of dead with a simple update zone

For convinience other users faced with similar problems, I'm reposting the fix as suggested by in4mer. If you encounter problems with these steps, please browse the thread started by in4mer, to:
Indoor/outdoor touch screen and the Pen Firmware update

Please download and install the following ' Indoor/outdoor Touch Panel and Pen Firmware Update', by using the following link:
HP EliteBook 2740 Tablet PC - interior/exterior touch screen and stylus updated Firmware - HP Business Support Center

Don't forget to read the 'Installation Instructions'. If the executable provided by HP is unable to create the bootable USB key, then follow the next procedure.

Step 1. Creating a USB bootable BACK by following the instructions at:
How to format a USB stick

Note: You don't need additional utilities, so no need to copy the files from the Win98 startup disk manually on the USB key, just leave him with the 3 files illustrated in the screenshot of last second.

Step 2 Copy all the files in the folder "Rompaq" on USB. This folder can be located either in the directory "C:\SWSetup\sp49201", or anywhere where the executable updates downloaded to date (i.e. sp49201.exe) excerpt from its content. Or, you can just use 7 - zip to extract the content of sp49201.exe and to access the folder "Rompaq.

Note: You may need to activate the options "Show hidden files" and "Visualize protected system files", which is located under the 'View' tab in 'Folder Options', which can be opened from the menu item "tools > Folder Options ' in 'Windows Explorer '. In ' Vista/Windows 7' press the 'Alt' key to make the menu bar in 'Windows Explorer' visible.

Step 3 Start your computer using the USB. After the comand prompt appears, type "SAM. BEATS", and then press on enter if the value of your monitor starts with"DRY"or type"HYDIS. BEATS"and press ENTER if the value of your monitor starts with"BEP ".

Note: Boot Menu options are available by pressing the key "F9" as soon as the computer starts to boot and HP logo appears.

Note: he showed both old and new firmware as even by updating the firmware on my machine. But he still solves the problem.

Tags: Notebooks

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