There is no easy way to determine which startup item or which service is causing the problem. You basically have to manually figure it out by re-enabling half the startup items and then restarting.
If the problem comes back, you know that the problem item is in that list of checked items. Then you check half of those and restart again. Eventually, you will only have one item checked and that will be causing the hanging. Once you know what program it is, go ahead and uninstall it. Uninstalling the program will also disable any services associated with that program. If you try running Windows 7 in Safe Mode, it fails at Classpnp.
What we figured out was that this issue could be related to a couple of things. The first thing to try is the startup repair or system restore using the DVD. You can read online how to boot from DVD and get to these options. Sometimes Windows will load in debugging mode and then you can restart the computer and it will start up in normal mode fine.
Some people have gotten stuck at the classpnp. For example, a bad memory slot can cause this issue. Remove one memory chip at a time and see if the issue goes away. Make sure that the memory is properly inserted into the slot. Also, try to replace the memory chips and see if that works. Make sure to check the power supply and ensure that the power going into the motherboard is OK.
If there is a lot of dust in the system, use some compressed air and clean it out good. For example, if you have a DVD drive s , then go ahead and disconnect them from the system internally. Try to boot up now and see if you can get past the hanging screen.
If you have it attached to your computer during boot up, it can sometimes try to use that as a boot device and fail. Go ahead and disconnect any peripherals attached to the computer. A lot of those KVM switches use USB and for whatever weird reason, it can cause problems with the boot process on certain machines. Try enabling and disabling this feature and try to restart your computer. If so, change it to IDE.
If you get back into Windows, you can then do a system restore, etc. You can clear out the CMOS in several ways including pressing a button on your motherboard, changing a jumper setting, etc.
You will need to perform a Google search for your particular machine to find out how to clear the CMOS. As a last resort, you can try using some spare parts if you have any and replace as much as you can: graphics card, sound card, hard drive, etc. Note that the first thing to try is to restart the computer in Safe Mode and then perform a shutdown. If the computer hangs while shutting down in Safe Mode, it could be a hardware issue.
There are a few hotfixes that Microsoft has released that pertain to this exact issue and therefore could solve your problem without you having to do anything. One client had 7-zip installed and it was causing Windows 7 to hang on shutdown. Previously, I wrote an article on how to setup and configure a Windows HomeGroup. However, as with any complicated feature of Windows, things can go wrong! One of the main problems is that people simply cannot join a Windows computer to a homegroup! Workgroups are what you had to use to share data between Vista and XP computers, though you can join an XP computer to a homegroup also.
In this article, I will try to exhaustively go through all the different reasons why you may not be able to access your homegroup. Just click on Start, type in troubleshoot and then click on the HomeGroup option. In Windows 7, click on View All to see a list of all the troubleshooters. It will automatically check all the settings required for the homegroup to function properly and tell you whether there is a problem or not.
Usually, it can also try to fix any potential issues. You can check to see if IPv6 is enabled on your computer by clicking on Start and typing in View network status into the search box. This will open Network and Sharing Center. Finally, right-click on your network connection and choose Properties.
Note that sometimes the registry setting does not get updated even though you enable IPv6 via the GUI interface. So you can check the setting in the registry by going to the following key:.
In the right pane, right-click on DisabledComponents and select Modify. Make sure the value is set to 0. Though this might sound obvious, you need to make sure the computer is connected to the same network the HomeGroup is on.
Only computers on the same subnet will be able to connect to the HomeGroup, so if you have a wireless router, it would only be the computers connected to that router. The first 3 parts of the IP Address should be the same, i.
Make sure that the HomeGroup password has not changed. You can check the HomeGroup password on another computer and then use that one to join the HomeGroup.
Then click on View or print the HomeGroup password. If you need to, change the HomeGroup password on the computer you are trying to connect to the HomeGroup. Make sure any third-party firewalls are disabled like Comodo, etc.
Sometimes anti-virus programs also come bundled with firewall software like Norton, McAfee Security and Kaspersky. These program can block the connections and prevent you from connecting to a HomeGroup.
You also need to make sure File and Printer sharing is turned on and allowed through the firewall. Click on start and type in sharing. Then click on Manage advanced sharing settings.
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