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

Sometimes when I click on a secondary HDD in windows explorer, explorer will freeze for a couple of seconds while the HDD will make a whiring noise before the HDD will open.

Another occurrence of this problem is when I'm watching videos from a secondary HDD, in the middle of the video, the video plays super slow and the audio still plays at the normal rate while the HDD makes the whiring noise. When it stops the video speeds up to sync up with the audio.

Is there any way to fix this? Or at least a reason for it?

System Specs

OS: Windows 7 64-bit
CPU: Athlon II X4 2.8GHz - 4 x 512KB L2 Cache
HDDs: 4 x SATA 3.0GB/s 7200 RPM

share|improve this question
up vote 4 down vote accepted

Well, with those hard drives the movie's bitrate definitely isn't the bottleneck. With your description of the hard drives starting then slowing down it sounds like an issue with the power profiles in Windows 7.

  • In Control Panel, navigate to power options and select change plan settings
  • From there, select change advanced power settings and expand the tree for the hard drive
  • Make sure it is set to never turn off

alt text

You may also want to update the BIOS and chipset drivers to ensure your SATA controller is up to date.

share|improve this answer
Why did this get two down votes? O_o It's exactly what I needed. Thank you – RyanScottLewis Dec 1 '09 at 0:08
You're very welcome! – John T Dec 1 '09 at 0:10
Ridiculous to downvote this. It's exactly what I was going to post, but I don't have Win7 and thus couldn't be sure the menu would be the same (and it's not). – JMD Dec 1 '09 at 0:13
Make sure ya keep it off, – bobobobo Dec 1 '09 at 2:54

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.