Lumia 2520 was officially unveiled on October 22, 2013, and released in North America on November 21, 2013. Very first Windows RT tablet computer developed by Nokia. And has since been disconnected.
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Slow or non-responsive screen.
Having too many applications open at the same time can cause the tablet to freeze as the processor will get overworked (2.2 GHz quad-core). To fix an unresponsive screen try closing the applications.
Power cycle the tablet off and on. A device can become unresponsive if has been left running without restart for a long period of time. If this does not work proceed to remove and re-insert the battery.
Very small Black or colored square on the screen.
Begin by identifying if it is a case of dead or stuck pixels. When pixels are dead they are black in color and screen is unresponsive, on the other hand when pixels are stuck they tend to be colored and are fixable. There are a plethora of pixel testing programs that you can download to test the monitor.
There are programs that exist to fix stuck pixels by blasting the screen with an array of colors making the pixel become unstuck. If that doesn’t work you can also get a damp cloth, turn off the screen and rub the screen with pressure while doing so wait for a few seconds and while rubbing turn the screen back on.
Dead pixels cannot be fixed the only option, in this case, is to replace the screen entirely, when replacing the screen be wary of not leaving any dirt inside the device as it may reflect when the device is turned on.
Nokia Lumia 2520 is having difficulty charging.
If the device fails to charge the first way of fixing it is to purchase a new charger cable and port. Since charging cables and ports become unresponsive over time due to normal wear and tear.
Step two would be to take a small needle or bobby pin and remove the dirt that was blocking the connection since the devices tend to accumulate dirt in their charging ports. If charging issues persist you may be required to replace the battery.
Nokia Lumia 2520 will not output audio.
Speakers can get clogged by dirt if this is the case you can clean them out by using compressed air.
Make sure the speakers are the chosen default playback device. Try to reboot the device, devices can tend to start acting up when they are on for long periods of time without restarting. If you have exhausted all your options you may be required to replace the speakers.
The BSOD occurs when there is a fatal error in the operating system.
The most common way to fix this problem is to boot the tablet in safe mode and disable a driver or update that was recently installed.
Check and see what programs start on startup, it is most likely a new program installed, remove it from the list of programs on the startup menu. It could also be that a program that was installed is causing the issue, so uninstall the program and reboot the tablet.
