Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

When i disconnected my Buffalo Hard Drive my computer starts to boot up and then stops before it auto detects my Hard Drive and Cd/Dvd Rom.

Once i have connected my External Buffalo Hard Drive it starts to boot up ok.

This problem occurs in Windows Xp and i have jsut installed Windows 7 and i am still getting this problem.

Can anyone help me to solve this problem

Thank You

share|improve this question

Check the device boot order in BIOS, make sure your internal HDD is higher in the list than any external devices. You may have to plug in the Buffalo HDD to get it to appear. This won't explain why it hangs but it may get around the problem until you find a proper solution.

share|improve this answer

Could you have accidentally installed the OS on the external HDD? I am not trying to be mean, but it could be an easy mistake to make if you installed the OS on an external HDD. If you did that the OS installed on the external HDD, it would cause this issue. Also, check the device boot order in BIOS as @Tog said.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.