Question about Lenovo ThinkPad T420 Notebook

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My screen keeps switching from blue to desktop and back to blue

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BSOD = BLUE SCREEN OF DEATH

This is mainly due to a driver issue, application error or worst hardware issue. Click below for more info.
How To Fix Blue Screen of Death BSOD

Posted on Mar 27, 2014

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Posted on Jan 02, 2017

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I KEEP GETTING THE BLUE SCREEN


46CB,
Might be your windows currepted.
Reinstallation of windows will fix your problem.
Before re-installation:
You can try the following steps:
  1. Boot your computer in Command Prompt Only. (After switching power on keep pressing F8 untill boot screen appears, select command prompt olny by moving up and down by arrow keys.)
  2. At DOS prompt type SCANREG and press enter key.
  3. It will run a diagnostic for registry and will save the current values as backup.
  4. After backup restore dialog will be appear. Select an old date on which date your computer was running well.
  5. Then re-start your computer.

Please post your feed back.

Thanks
Iqbal

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Hi

Does it give you any error msg on the blue screen?
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