I have tomtom go 720..(only had for about 4 weeks) it was working fine ,then i took it on flight from texas to Ca. it worked there but upon returning to texas 5 days later, it will not work..i thought charging it would solve it but all i get is the screen to come on..then it will not do or let me do anything by touching screen...after 10 minutes or so an X appears then still until the red X starts flashing i can't even turn off...i can not use this at all ..i tried reset button....i'm sure i have failed to do something silly but i can not figure this out....thanks, monica

Go for update it will solve your problem.

Try this and post back if your problem still persists .

Dear,
This solution can be used in the following situations:

• The device hangs in the start screen (splash screen)
• An SD-card with a red cross is displayed on the screen
• A picture with a red dot and white cross is displayed
• The device can’t be turned off

If you haven't already done so, please download and Install TomTom Home fromhttp://www.tomtom.com/7602

If you don’t have a full backup of your TomTom yet we advise you to make one before continuing with the steps in this email. You can make a backup by following the steps below:

1. Reset your TomTom device: http://www.tomtom.com/6965 and connect it to your computer. 
2. Click on 'Backup and Restore -> Backup' in TomTom Home 2.0 
3. Enter a name for the backup and click [OK]
• IMPORTANT: When the software is asking to delete parts from the backup click [NO]

After the backup is made you delete the files from the root directory of the TomTom. Follow the steps below to do this:

1. Reset your TomTom device: http://www.tomtom.com/6965 and connect it to your computer. 
2. Open My Computer in Windows, or Finder in Macintosh from your desktop and turn on your TomTom device.
3. On your screen a new removable disk appears, this is your TomTom device, click on the disk to open it.
4. You will see a list of folders and a list of loose files
5. Delete all of the loose files. IMPORTANT: The folders with their content must NOT be deleted. 
5. Close the window when all files are deleted by clicking on the [x]. 

Next we will reinstall the application via TomTom HOME.

1. Start TomTom HOME on your computer
• TomTom Home should automatically check for updates and prompt you to install them, if not:-
2. Click on 'Update my device'. If you get the message 'No Items Available', or there is not an application to download, click on 'Add Maps, Traffic, Voices etc -> Items on my computer', select the application and click on 'Add'.
3. Select the Application update. 
4. Click on 'Device -> Disconnect Device', then turn off your device when it is done installing and disconnect it from your computer. 
5. On a PC, in the System Tray by the computer clock, click on the 'Safely Remove Hardware' icon and disconnect the TomTom also in this way.

When switching on the device it should boot as normal again.

regards,
rate it only if it help or fix it!

Several easy steps would solve the problem:
1. Make sure you have TomTom Home installed on your computer. If not, go to http://download.tomtom.com/sweet/application/home2latest/TomTomHOME2winlatest.exe
2. Hit the RESET for about 15 to 20 seconds on your GO720
3. Connect your GO720 to PC via USB cradle/cable
4. Hold the POWER button for 10 seconds or until you see a black and white boot screen, then release the POWER
5. Hit the POWER again, the GO720 will restart and connect to PC
6. RUN TomTom Home and the program will recognize your GO720 and install new navcore application.

If your device shows a flashing 'X' after you turn it on, the TomTom application is not installed or cannot be found.

To solve this, reinstall the application. Follow the steps below.

Tip: Data transfer may not work properly if the connection to your computer is via a USB hub or keyboard.

1. Reset your device.
   
   
2. Connect your device to your computer.
   
   
3. Turn on your device by pressing the power button for 5 seconds.
   TomTom HOME starts.
   
   
4. In TomTom HOME, click Add Maps, Traffic, Voices etc. and then click Items on my computer.
   Then expand Applications by clicking the plus symbol and click Add.
5. Note: The application is only available at this location if you previously updated it via HOME. If you never updated the application before, click here.
   
   If you never updated your device on this computer, click Update my device.
   
   Important:
   If HOME asks you to Unplug your TomTom device, try clicking OK first.
   If HOME notes that a problem has occurred, click Back.
   
   HOME offers to download and install the latest version of the TomTom application.
   
   
   
   
   
   
6. Click Done.
   
   
7. In HOME, click Device > Disconnect Device.
   Your device should now start up again. If it hasn't started up after 10 seconds, press the On/off button

battery can be removed by the following text

NOTE: on how to remove the battery, after removing the screws, remove upper card, by 2 screw this give you access, to see the battery but you CANNOT remove it from where you see it.

The only way is to prior the back on the screen up and out, this will give you access to the battery.

Also DO NOT disconnect the ribbon cables as you will stuff up the connections and they are plastic and will break if touch, there is a special tape on them to stop you removing them.

One tricky bit is to make sure when you remove metal bracket for the Tomtom release( bracket that seat on top of battery) to note which way you removed it, as it has to be relocate back on a pin within the unit housing.

This is the push button mechanism that you push to release the Tomtom for the window device.

You will need to remove the industrial type tape on both side of this bracket which is tape to the battery itself, before you can remove the battery via the screen area.
One more NOTE: The screen is probably the hard's thing to remove, just prior the outer edge real slow and easy with a screwdriver, the outer retainer need to move FIRST then the screen itself, watch out for the ribbon cable and circuit board at the rear of the screen, can be damage if you put the screwdriver to far under.

thanks for using fixya

rate my solution

You will probably need to have the firmware flashed or updated. However, the good news is that your GPS is still under warranty. So in my honest opinion, the best thing to do would be to take it back to the store where you purchased it and ask them to fix it for you under warranty. Don't try to attempt anything yourself and screw up the device further and void your warranty.

Hope that helps!

Cheers!
IrishDruid

First try to remove the battery for 4 hours, this procedure will reset and restore the previous and default settings of the unit..

let me(*us) know here again...

Hi.

First do a hard reset again.Then connect your tomtom to the computer and run an update.

This will solve your problem.Let me know the result.

First thing to do here is to remove the battery from the unit for about a minute to refresh the device , then after 5 minutes put it back in then try to charge it and also check if the red X is still there if not check if the screen will now come on...

Hope that helps........

Try to do a factory reset and then try to upgrade your firmware.

this will solve the problem easily

Your model needs the SD card