I have a nextbook model NX007sd4g and I forgot my pattern and it told me to sing with my google account but it still say error what do I have to do to unlock it please help me

Try this:

Use your Google account for unlocking

1. When you try different patterns and unable to unlock your phone in five attempts. Then a message pop-up and shows two buttons "next" and "try again".
2. Now click on "next" button and you see two options for unlocking phone. One is answer the security question and the second option is to provide Google account details.
3. Mostly people don't set a security question. But if you set it then simply answer the question and unlock your device quickly. Otherwise check the Google account option and click "next".
4. Now provide your Google account username and password attached with your device and click on "sign in".
5. After that you are directed to choose new pattern and now you can unlock with this pattern.

Unlock pattern without Google account

If you also forget Google account details then what? Here we have solution for this and that is factory reset your android device. Lets talk about how to do it.

1. Power off your phone.
2. Now press Volume up, power and home button at the same time and wait until your device starts.
3. When you see logo screen release the power button and keep pressed the other two buttons.
4. Now your screen shows android system recovery and there is a list. Use Volume up or down keys to select option from the list. And select factory reset option and then press power button to let the action begin.
5. Now it asks you for confirmation, select "yes".
6. After factory reset completes, it again shows you android system recovery screen. Now select reboot option and after restart it will not ask you for pattern.

Source: http://howhut.com/how-to-unlock-android-phone-or-tablet/

BIOS or windows?

http://www.androidtablets.net/forum/android-tablet-usage-tips-tricks/6280-forgot-your-unlock-pattern.html

Hi try typing "null" minus the quotation marks as the password instead of your google password, it should prompt you for a new pattern

Reset the screen unlock pattern

If the incorrect screen unlock pattern is entered five times in a row, the phone is locked.
Note: In order to reset the screen unlock pattern you need to have a registered Google account on your phone. If you don't have a registered Google account on your phone, you must repair the phone software before tapping Forgot pattern.
To reset the screen unlock pattern by answering a security question:

1. If entering the incorrect screen unlock pattern five times, wait for 30 seconds and then tap Forgot pattern?.
2. Tap Answer question > Next.
3. Enter the answer for the security question.
4. Tap Unlock.

To reset the screen unlock pattern by entering Google account details:

1. Tap Enter Google accounts details > Next.
2. Tap the Username field and enter the phone registered Google account username.
3. Tap the Password field and enter the phone registered Google account password.
4. Tap Unlock.

To repair the phone software:

1. On the computer: Open PC Companion 2.0.
2. In the Support Zone application, click Start > Repair and follow the instructions on the screen.

Note: The installed software on your phone will be replaced, and all personal data stored will be lost.
Tip: If it is not possible to repair the phone software, please contact your Sony Ericsson Customer support.

google has your information,enter and contact them for to provide your personal profile.

sincerly. God bless you

I forget my unlock pattern code and now asking the gmail addres

I forgot my pattern and my google account info could u help unlock or find google account info

If you forgot the pattern and the security question answer, you can also override it with the google account that the lock pattern requests.
The Google account that the pattern lock requests will be the same Google account you have used to access the Android Market and other Google apps on the handset. If you cannot remember these details, you would need to reset the handset using the Update Service program.

This program resets the handset while the phone is completely powered off so there will be no need to use the touchscreen or access the phone at any stage. You can download the Update Service here:

www.sonyericsson.com/cws/support/softwaredownloads/detailed/updateservice/xperiax8

IDK about a simple legitimate fix for this. I was just messin around with the pattern, hit "forgot pattern" to see what it does. It asks me for the Google username and password, but has no way for me to go back! I know the pattern! The Motorola Droid is free from this problem, when on the forgot password screen, it still allows me to go back to the pattern screen. Very disappointing HTC...

On the other hand, there is a bit of a "hack" that can be used to solve this. Create a new Google account. Then call the locked phone from another phone. While in the call, you have full access to the phone. Press home, go into your settings, and add your new Gmail account into the phone. End the call, go back, and enter your new Gmail info. You may also need to enable Wifi while the call is still connected, I'm not sure if 3G will work for the sync while the phone is "locked".