Solution to Problem: computer will not boot if USB device is plugged in

computer will not boot if USB device is plugged in

My computer (HP AMD Athlon Phenom II Quad Core, 8 GB Memory 1 TB HD) will NOT boot up or restart if I have certain USB devices plugged in.  On a fresh boot or during a restart, it immediately stops at a blank black screen with a blinking cursor in the
upper left corner of the screen.  I began experiencing this problem well over 16 months ago when I started using a MagicJack phone that uses a USB to connect to the internet and is a home phone service (for those not familiar with MagicJack).  I have lived
with this issue for so long, knowing that other people I know have a MagicJack device and are NOT experiencing this problem because they are still running Windows XP.  However, I have become increasingly frustrated as I recently purchased a brand new Western
Digital External Hard drive that is giving me the same issue.  The hard drive is designed for continuous back-up (when a file is changed, it automatically backs it up) but if I have to keep unplugging it and plugging it back in, it sort of defeats the purpose
of always having it connected.

Please help!

Keys to the Problem computer will not boot if USB device is plugged in

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Hi,
·         Do you remember making any recent changes to computer?
·         Does the hard drive work on other computer?
Method 1:
I would suggest you to try connect USB device and try restarting in safe mode follow the steps in the below for safe mode:
http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode
 
Method 2:
Try in clean boot follow the steps in the link below for clean boot:
http://support.microsoft.com/kb/929135
Follow the steps from the article to “Reset the computer to start as usual”, after performing the clean boot troubleshooting.
Method 3:
If the above step fails follow the steps in the link below:
http://windows.microsoft.com/en-US/windows7/Change-create-or-delete-a-power-plan-scheme
Hope this helps.

Run CHKDSK to Fix computer will not boot if USB device is plugged in

  • Go to the Start button.
  • In the Search box, type "cmd" (without quotes) and press Enter.
  • At the command prompt, type "chkdsk /r /f" (without quotes) and press Enter.
  • Reboot your computer.
An error might pop up:

"Access denied as you do not have significant privileges. You have to invoke this utility in elevated mode."

If you receive the above error message, it means you are not logged into you computer as an Administrator. If that's the case, follow these steps to run the command prompt in elevated mode:

  • Go to theStart button.
  • Go to "All Programs > Accessories" and right click on "Command Prompt".
  • Select "Run as Administrator".
  • In the Search box, type "cmd" (without quotes) and press Enter.
  • At the command prompt, type "chkdsk /r /f" (without quotes) and press Enter.
  • Reboot your computer.

Recommended Method to Fix the Problem: computer will not boot if USB device is plugged in:

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