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How to replace cracked Nexus 7 screen and digitizer

Open in another browser and check.
If problem doesn't exist.. Then uninstall and reinstall browser.

sorry but you cant save your photos without unlocking the screen. the only way to get back on it is to factory resore. ( if there was a way to take the photo's off without unlocking the screen there would be no point in having the screen lock security )

Do a hrar Reset maybe? http://www.hard-reset.com/google-nexus-10-hard-reset.html

go to accounts check the settings in the server section of the e-mail page go to accounts - properties and click on the server tab ensure that the settings are as required by your service provider contact your service provider for assistance

How to Install Adobe Flash Player on Your Nexus 7 Running Android 4 4...

1. Make sure it fully charged 2. Do it while its Plugged int 3. If there is a SD card in it remove it 4.If this does not work you can do a Hardwired reset

Hard Reset via Hardware

If your device is completely unresponsive, you still have one additional option. 1. Press the power button and both volume keys for several seconds. The computer screen will eventually blink off. Continue to hold until you see the Android recovery logo and the large Start selection at the top of the screen. 2. Move the volume keys up and down to see the menu selections. If you don't want to factory reset, you can try to Power down or to Restart bootloader from these selections. The power key will select the option. 3. If you are forced to factory reset and wipe the device, select Recovery Mode. Your device will reboot. This reboot will be much slower than normal. 4. When you see the Android with red triangle, hold the power button down and press the volume up key until the wipe data/factory reset option appears. Press the power button to select it. Remember that this will erase all the data on your device. 5. With the volume keys select Yes - erase all user data and again press the power button to select this option.

You have cracked the touch screen. You could get the screen replaced.

reinstall the OS after charging with powerful charger min 1.5 Amp http://download.cyanogenmod.org

try the cleaner master from www.moborobo.com and remove the old apk and junk

How to remove password from google nexus 7

Make sure device is fully charged. Try connecting to an open wifi access point (without password) to eliminate possibility of using the wrong password for a secure connection.

I assume you're using a secure Wifi connection with a password and it seems like that authentication is not working. You could try using an open wifi access point to eliminate the possibility of this authentication issue.