Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: DPCs and Problems Shutting Down

11 Nov 2009   #1

Windows 7
 
 
DPCs and Problems Shutting Down

I noticed that whenever I try to work with a DVD that is scratched, that the CPU usgae spikes. Process Explorer indicates DPCs accounting for >60% of CPU usage, and I have to assume that this is related to the problems with the DVD drive not being able to read from my DVD.

However, I cannot get the CPU usage to go down, even after removing the DVD and closing any software that I was using with the DVD. Does anyone have any suggestions how to stop the DPCs and Hardware Interrupts and bring the CPU usage down?

Also, if I try to reboot after I am in this situation (a necessity so that the computer can run smoothly with low usage), the shut down freezes and I have to do a hard power down at the PSU. I am assuming that the DPCs and Hardware Interrupts have something to with that.

My System SpecsSystem Spec
.

11 Nov 2009   #2

7600.20510 x86
 
 

Ya, I notice similar problems when trying to read a defective disc.

Only solution = power down, power back up.

You could try using this - http://www.majorgeeks.com/download2623.html

Or you could sand the bottom of the disc with white toothpaste and your thumb, going from center to outer edge. If you remove enough of the damage this way, this disc could then be read well. Make an .iso of it if possible, then throw out the original
My System SpecsSystem Spec
11 Nov 2009   #3

Windows 7
 
 

I never noticed this in XP. Is there a reason why the Windows 7 reacts this way to a bad disc?

Also, is it normal that shutting down is a problem (it freezes on the shut down screen) in this instance and that I have to power off at the PSU?
My System SpecsSystem Spec
.


11 Nov 2009   #4

7600.20510 x86
 
 

Yeah, because explorer.exe hangs and can not be closed, even by the OS itself when it tries.

It's just how it is.
My System SpecsSystem Spec
Reply

 DPCs and Problems Shutting Down




Thread Tools



Similar help and support threads for2: DPCs and Problems Shutting Down
Thread Forum
shutting down problems Software
Major problems shutting down General Discussion
Lack of Internet causes problems shutting down Network & Sharing
Lack of Internet causes problems shutting down BSOD Help and Support
Problems with BSOD on Shutting Down or Restarting BSOD Help and Support
Problems shutting down computer General Discussion
Constant DPCs When Trying to Copy/Sync to External HDD Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 07:42 PM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33