Posts Tagged ‘error’
Resolve Java issues in Opera
From time to time you may experience problems with the execution of the Java plugin in the Opera browser. This happens because its path is not correctly configured in the options.
To resolve the issue, open an Opera browser window and enter
opera:config#UserPrefs|PluginPath
into the URL bar. There should already be one path in the Plugin Path line. Enter a semicolon and add an additional path to the line. On a default Windows 7 and 8 installation, the Java plugin path should be
C:\Program Files\Java\jre7\bin\plugin2
depending on your version of Java. Afterwards, scroll all the way down and save. Restart the browser the the issues should be solved.
‘Unable to open X display’ error on Cinnamon (Linux Mint)
You usually notice this error due to the lack of a menu bar and all kinds of window decoration after you unsuccessfully played with your Cinnamon settings or just suffered some kind of other error. If you then try to reset Cinnamon or to use any other command involving the desktop environment, you will get the
Unable to open X display
error. While its hard to find out what actually causes it, you can easily bypass it by purging and reinstalling Cinnamon – which is a painless process and leaves your personal Cinnamon configuration untouched. To do so, log in with another desktop environment or open a command line environment by pressing Ctrl + Alt + F1. Afterwards enter
sudo apt-get purge cinnamon && sudo apt-get install cinnamon
Don’t forget to log out and in again to make the changes effective. To log out without panel, press Ctrl + Alt + Backspace.
Remove Driver Filters to Resolve Device Manager Errors on Windows 7
Sometimes the situation might come up where a device that was working flawlessly before will stop doing so, even if you try everything – replugging it, reinstalling its drivers, rebooting the computer – but nothing will help.
A possible cause for this is a driver filter that was either installed by any third party software or simply was corrupted. These can be part of any hardware driver and can intercept requests between software and driver (UpperFilter) or between hardware and driver (LowerFilter). Furthermore, there are two types of filter for each relation – device filters and class filters, where device filters work only for specific devices and class filters work for every device of a specific type, for example every bluetooth radio or every USB device attached to your computer. Those class drivers are the ones that usually cause the issues (if it is a filter issue) because on the software’s side, it makes more sense to address those to alter specific behaviours.
If you experience such an issue (which is commonly recognized by the Device Manager errors 19, 31, 32, 37, 39 and 41) it is possible to delete class filters in the registry. Before you make any changes there, it is highly recommendable to back it up. To do so, enter the registry by entering regedit into a Run… prompt and on the left pane, right-click the topmost key (Computer). Click Export and save the file to any location. The file you just created is a .reg file and can be imported into the registry again by simply double-clicking it.
To find the correct filters in the registry, navigate to the Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class key. This will have many subkeys all named like this: {36FC9E60-C465-11CF-8056-444553540000}. These represent the different classes of hardware, you can sport their type by the (Default) or Class values. The one above is for all USB devices:
Along with the other values, those keys contain the class filters if any are present. They are named UpperFilters and LowerFilters. If you have backed up your registry, look for the device giving you headaches and remove the class filters by right-clicking and deleting them.
This guide is only a solution to a possible source of errors and does not cover the whole range – if the problem persists, the source most likely lies somewhere else.
Defragment Boot Files on Windows 7
Apart from the usual file defragmentation on Windows 7, there is another undocumented function that rearranges boot files to grant faster access on them, resulting in shorter boot times. The usual boot options can be viewed by entering defrag -? into a command line window (this can be done in any command line window; to actually start the defragmentation however you need an elevated command prompt – therefore search for cmd in the menu, right-click it and choose Run as Administrator).
The one we need to use, the /b switch, is not listed there. This undoubtedly has its reasons and you should back-up files before you run it. Do not run it if you fear loss of data.
defrag /b C:
I hereby assume that C: is the drive you have your boot-files on. I ran the command on a Windows 7 Enterprise 64-bit machine and it worked flawlessly.
If upon entering the defrag command you get the errorcode 0×89000017, stating that some registry entries are missing, run the following in an elevated command prompt, wait up to 20 minutes and try again afterwards:
Rundll32.exe advapi32.dll,ProcessIdleTasks
This will initiate some services to start that usually only run when the system is idle, one of them being a service of Superfetch that needs to be run before the defrag /b command.
Windows Automated Installation Kit Error: 0xc1420117 on dism Command
Error: 0xc1420117
The directory could not be completely unmounted. This is usually due to applications that still have files opened within the mount directory. Close these files and unmount again to complete the unmount process.
This error happens when you use another Dism.exe which is located in C:\Windows\System32. The correct application to use is C:\Program Files\Windows AIK\Tools\amd64\Servicing\Dism.exe, so you need to direct your command line tool to that location before you run the unmount-command (use cd C:\Path to change directory). Replace amd64 in the path with your architecture or leave it out to go in the Servicing folder inside Tools.
How to run Windows 8 in Virtualbox
Trying to run Microsoft’s Development Version of Windows 8 you might run into some problems – the two major ones being these two:
What Windows Version shall I choose in the construction of the machine?
The solution here is to choose the appropriate version of Windows 7. If you downloaded the 32 bit edition, choose Windows 7 32 bit, same for 64 bit.
When I start the machine I get some error!
Starting the machine for the first time you will most likely get the error stating:
“Windows failed to start. A recent hardware or software change might be the cause.”
[...]
Status: 0xc0000225
Info: An unexpected error has occured.
This is what you are shown:
To fix this, stop the machine and enter its settings. Go to Settings > System and check Enable IO APIC:
Exit the settings and start the machine again. You should now be able to configure the installation.