Repairing WMI problems - WMI Service is Missing

WMI Service is missing but the wbem folder structure is present in the system.

After so much attempt able to resolve this issue..

Remember WinXP Service Pack 3 Solution ??  Permission issue  or access is denied

Same applied here

resetting the security permissions on the registry and system drive, which will also make sure that WMI is setup with the right permissions. You can do this by grabbing the SubInACL tool from Microsoft and running the following commands from the directory in which you installed it:

Restore Networking on Ubuntu 14.04

Restore Networking

 

Restores networking service in Ubuntu 14.04 with that of Ubuntu 13.10

Networking was changed in Ubuntu 14.04 without any clear reason why - further detail submitted by a user found here: http://askubuntu.com/a/449916

I've gone ahead and taken his suggestion of reverting the networking scripts back to that of 13.10 to allow for the familiar, working service networking restart command to function as expected.

apt-get update fails in Ubuntu Server

Normal Ubuntu releases are supported for 9 months, whereas LTS (Long Term Support) releases are supported for 5 years.  Once support is up for the version of Ubuntu you are using the repository is moved to another server and will no longer be available on the standard 

apt-get update error - W: Failed to fetch mirrors / Some index files failed to download. They have been ignored, or old ones used instead

DHCP Server - Backup & restore Procedures

BACKUP & RESTORE OF DHCP SERVER

Manual DHCP server backup

You can also run backups manually through the DHCP management console. This feature can be useful if you intend to make major changes to your DHCP settings. You can back up the database to a location other than the default folder. Note that this won’t change the location of the regular automatic backups. This setting can only be changed in the Windows Registry with the BackupDatabasePath parameter.

Rebuilding the Windows 7 Icon Cache.

Follow these directions:

1. Close all folder windows that are currently open.
2. Launch Task Manager using the CTRL+SHIFT+ESC key sequence, or by running taskmgr.exe
3. In the Process tab, right-click on the Explorer.exe process and select End Process