Hi,
Try a hard reset on your tab.
Warning : a hard reset will erase all downloaded apps and user data and restores the tab to factory default condition
Here is a link which shows you how to perform a hard reset. Scroll down and try the third (3rd) method shown in the link first (1st) as it may reset your tab without deleting anything . if it doesn't work try the first (1st) method.
Before you try any reset procedure ensure that your tab's battery is charged or has been on charge for what you think is a reasonable time. If you think that it would be low allow 1-2 hrs . Also do not perform a reset with the charger connected.
http://www.hardreset.info/devices/acer/a...
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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