The lack of details significantly limits the effectiveness/targeting of any help.
Slow or no shut-down is often a symptom of a fundamental process that can't be terminated for some reason. That can result from a number of different problems:
hardware, software, damaged OS, drivers, virus, etc. (in no particular order)
Of course you should use a decent anti-malware suite to scan for and handle any viruses, trojans, etc. Even if you already have one installed, it might itself be compromised, not up to date, or simply not very good. You might consider using something like the Kaspersky bootable rescue AV tool (you download and burn it to CD/DVD (from a different PC) and then boot from it on the suspect PC, thus it's not affected by any virus that may have already compromised your system). The Kaspersky tool isn't the only one available.
IF you recently installed some new software, hardware, drivers, OS updates, etc. before this symptom started happening, then back each one out and see if the problem disappears at some point. IF it does, then re-install them ONE-AT-A-TIME until the problem re-appears, then debug or uninstall the problem-causing item.
Or, if you had a power-failure recently, you might have a corrupted file-system. It MIGHT help to initiate an OS repair action (but that has consequences so read up on what happens when you do that).
edit to add:
By the way, until you get this problem solved, I would make SURE that "write-cacheing" is DIS-abled for ALL disks. In fact, to limit the risk to my data, until the problem is resolved I'd disconnect all the disks except for the one that has the OS on it (this assumes the OS has no boot/run-time operational dependencies on those disks). Make sure you follow proper electrical power and ESD handling procedures when doing so.
I found the problem on my machine with restart/shutdown hangs: wmpnetwk.exe. Long ago on build 7057 I disabled the "Windows Media Player Network Sharing Service" in services.msc. Every updgrade the problem transferred. Today I had the revelation that it could be as simple as restarting the service.
Although I am happy to have the restart/shutdown functionality, I am not satisfied with this service having to run during my computer usage.
Can anyone think of a workaround? Perhaps a script at shutdown that would turn the service on just so it can be turned off and resume shutdown?
I hope this helps the rest of you guys having the same problem. I know how frustrating it can become.
Shutdown issues are mostly due to hanging apps that won't close gracefully.
To figure out which one, open Task Manager to the Processes tab and attempt to shut down.
Look for any unusual activity just before the system hangs.
Beyond that, I'd have to suggest killing off processes that are running prior to shutting down.
End 4 or 5 processes and then shutdown. If it hangs, you didn't find it - if it doesn't hang, then you've found it. Continue to do this with groups of 4 or 5 until you find the process that's causing it.
In the event that this doesn't locate it, then try killing them cumulatively - kill the first 4 or 5, then kill the first 8 or 10, etc. This is in case that it's a problem with one app relying on another.
Eventually you'll have killed everything and it'll either work or not work. If it does work you'll be able to identify the process by trial and error - if it doesn't work, then I'd have to suspect an issue with either drivers or the Windows OS.
PC spydoctor update did it all got rid off it all together thanks
My friend has been using this program for years with great success. He has had lots of problems with this program since he is now using windows 7.
Freeze ups when ever it updates.
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Are you putting your computer in sleep mode or hibernation? Click on Start button, then at the right of the sleep/hibernation button you will see an arrow. Click on it and then select Shutdown. The computer should now shut down itself properly.