Solution #1 if you hold the volume up and power button in at the same time while the tablet is shut off should get you where you need to be.
Found this info on another site, hope this helps. This user was having similar issue with reset.
1 Fortunately USB debugging had been set as default on the tablet.
2 I downloaded the SDK package with tools and platform tools.
3 That package had the adb programs that we needed to reset.
4 Unfortunately the adb couldnt recognize the tablet.
5 The Android showed in Device Manager with a yellow triangle.
6 Updating the device driver on via web was useless.
7 I needed an updated USB driver
8 I found the updated USB driver for this device in Uberizer from TechKnow.
9 The driver that I needed was stored in C:\Program Files\Techknow\Uberizer\Usb driver\A1x livesuite 107 32 bit.
10 One computer used the 32 bit and one used the 64 bit. (both are available)
11 Finally I was able to access the SDK\platform-tools\adb.exe (program)
12 There area lot of tutorials on how to use SDK and adb but my mani problem was the adb recognizing my android device. If it doesnt see the tablet you surely need the correct USB driver.
13 First I used Uberizer to connect.
14 Then I used the CMD prompt in windows and followed the path to where the adb program was stored. Mine was C:\Developer\SDK\Platform-tools\ (it came packaged within a package alt-bundle-windows-x86, but I moved the SDK portion to an easier place to access.
15 Dos commands opened the C:\Developer\SDK\Platform-tools16 I used C:\Developer\SDK\Platform-tools\adb devices to make sure the tablet was recognized.
17 Then I used the C:\Developer\SDK\Platform-tools\adb shell <return>
18 rm /data/system/gesture.key (note the space following rm)
19 Then I booted the tablet and the pattern lock was gone.
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