Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

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

I have a new (3 weeks old) WD My passport HDD 1 TB, and I use Windows 7. I run the HDD through a USB 2.0 port, since my computer doesn't have USB 3.0 ports. My mouse is connected via a USB port as well. It happens occasionally that when I try to access folders on the HDD, the mouse pointer lags and jumps in the direction I moved it to, specially if the folder have many files and folders, and when these folders change there shape according to there contents, also it sometimes happen when I check the size of a large folder.

When it happens it does when I move the pointer over an open window of this drive. I doubted the antivirus software I have (AVG) so I disabled it but still happens, maybe reduced not really sure but it happens.

Taking in consideration that the drive have shown no sign of other issues. All the WD utility tests, and data life guard tests I ran came out "Passed". The smart report is OK. But when this condition happened I began to suspect the drive. Do I have a bad drive here??

share|improve this question
run ProcessExplroer in background. Do you get DPC or Interrupt storm at the time you get the mouse pointer issues? – magicandre1981 Dec 14 '12 at 7:26
I'm sorry but what is DPC or interrupt storm?? and how do I detect them?? – willy Dec 14 '12 at 7:42
Do you see such a high Interrupts usage?… – magicandre1981 Dec 14 '12 at 8:23
There are some jumps on the graph, but instantaneous. How do I show the box that you showed which says: CPU 83.38 49.78% interrupts 23:83:32 I looked and I can't find it. – willy Dec 14 '12 at 8:33
when I enlarge the graph and point below the red area under the graph at these jumps, it gives: explorer, AVG, or firefox (My browser) stuff like that.. – willy Dec 14 '12 at 8:37

ok, I add this here as answer, because I need some space (convert it to a comment if needed).

I need to know what happens on your system, so I want to run a xperf trace. Install the Windows Performance Toolkit, copy the following text into a .cmd file:

@echo off

xperf -on Latency+PROC_THREAD+LOADER+CSWITCH+FILENAME+FILE_IO+FILE_IO_INIT+DISK_IO+DRIVERS -f kernel.etl -stackwalk Profile+CSwitch+DiskReadInit+DiskWriteInit+DiskFlushInit+FileCreate+FileCleanup+FileClose+FileRead+FileWrite -BufferSize 1024 -MaxBuffers 1024 -MaxFile 1024 -FileMode Circular

echo Reproduce the problem now, hit any key to finish, collect Merged Etl file


echo merging etl... 

xperf -d xperfSlowIOHighCPUcir.etl

@echo on

Now open a cmd prompt with admin rights ad run the command. Now minimize the cmd Window and when you have the issue again, switch to to the CMD, wait 30s and press a key to stop logging. Compress the xperfSlowIOHighCPUcir.etl as 7z and upload it (SkDrive, Dropbox) and post a link to it.

With this file I can see what your system does when you have the issue.

share|improve this answer
Can you provide some tips in your answer about what future readers should do with the .etl file, or perhaps link to some tutorials? Not everyone might want to send files to you (no offence!), and you may not even be around to respond. They should know what they can do on their own to diagnose the issue, or at least how to get started on it. – Karan Jan 2 '13 at 18:43
I provided some basic guides on, but in his case I can't really see what the issue is. OS I can't say, look at this or this. – magicandre1981 Jan 3 '13 at 5:06

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .