Computer World

Every moment you alter a configuration setting, that will be automatically engrossed to the Registry. For example if you change your system time the Registry is updated; if you change your desktop wallpaper, the Registry is updated; if you change your home page in Internet Explorer, the Registry is updated. The Registry is also updated whenever you install a new software or constituent twist. And it all happens automatically, in the environment.

When Windows needs to do conscionable most anything, it accesses the Registry to obtain the priggish plan entropy. In this signified, the Registry functions equal a curb relate for your intact computer system; it defines how every line of your method looks and complex.
Organizing the Registry


The Registry is unionized into quint student sections, titled hives. Apiece multitude is stored in its own group file on your PC's brutal turn.

These hives countenance the succeeding:

     * HKEY_CLASSES_ROOT. Contains information about registered applications, including file associations and OLE object classes. (This hive displays the same settings as the HKEY_LOCAL_MACHINE\Software\Classes key.)
    * HKEY_CURRENT_USER. This hive is a subset of the HKEY_USERS hive, pertaining to the current user of the PC. It contains all attributes for the desktop environment and network connections.
    * HKEY_LOCAL_MACHINE. Contains most of the settings for your PC's hardware, system software, and individual applications.
    * HKEY_USERS. Contains subkeys corresponding to the HKEY_CURRENT_USER hives for all users of the PC, not just the current user.
    * HKEY_CURRENT_CONFIG. Contains information gathered when Windows first launches, such as settings pertaining to your PC's display and printers. The data stored in this hive is not permanently stored on disk, but rather is regenerated each time your PC boots.

Each hive is further organized into a variety of keys and subkeys that can be represented by a series of folders and subfolders. For example, if you want to find configuration information for which programs Windows loads at launch, you would look in the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run.

if you want to speed up Windows' performance or customize some hard-to-find settings, editing the Registry may be the only way to do it.


Tip: Most experts recommend that you make a backup of the Registry before you make any changes to it. Backing up the Registry is as simple as setting a System Restore point before you make an edit. The System Restore point contains a backup of the Registry; if you have problems following a Registry edit, you can simply restore the Registry to its pre-edit state using the System Restore utility.



You modify the Registry with a usefulness imaginatively titled the Registry Editor Application. This utility is included with all versions of Windows, including Windows 7, smooth though you won't conceive it anywhere on the Sign card or in the Essay Commission. Instead, you commence Registry Editor by entry regedit into the Seek box and imperative the Participate key.

As you can see in Image 1 below, the Registry Application window has two panes. The leftish pane displays all the Registry's hives and keys. All keys human numerous subkeys. The manus pane displays the values, or configuration message, for apiece key or subkey. You showing the antithetical levels of subkeys by clicking on the right-arrow next to a specific component.
Editing and Adding Keys, Subkeys, and Values



To perform this tweak, follow these steps:

1. Open the Registry Editor.
2. Navigate to the HKEY_CURRENT_USER\Control Panel\Desktop key.
3. Right-click the MenuShowDelay item and select Modify.
4. In the Edit String dialog box, change the current value (typically 400) to something a bit lower - something around 100 typically works well.
5. Click OK.

(See video below for demonstration). You can now close the Registry Editor and see how fast your menus open.

Caution: If you set the MenuShowDelay value too low, menus will open if you merely move your mouse over them. You need a value somewhere above 0; otherwise, it will make Windows difficult to use.
Disabling Low Disk Checking

Windows constantly checks to see whether there's enough free space on your hard drive. If there isn't, it displays a low disk space warning. The problem is, all this disk space checking uses a number of system resources, and you probably know if your disk space is low, anyway.

You can speed up your PC by turning off this low disk space checking.

Here's how to do it:

   1. Open the Registry Editor.
   2. Navigate to the HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies key.
   3. If the Explorer key exists, select it. If not, right-click in the rightmost pane and select New, Key. Name this new key Explorer, and then select it.
   4. Right-click in the rightmost pane and select New, DWORD (32-bit) Value.
   5. Name the new DWORD NoLowDiskSpaceChecks.
   6. Right-click the new NoLowDiskSpaceChecks item and select Modify.
   7. In the Edit DWORD dialog box, change the value to 1.
   8. Click OK.

Note: A DWORD is a special type of data value used for some Registry entries.
Moving the Windows Kernel into Memory

As you all know anything that runs in system memory runs faster than if it runs from your hard disk.  

You can speed up Windows itself by moving the Windows kernel into RAM, by executing this Registry tweak:

   1. Open the Registry Editor.
   2. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\
   3. CurrentControlSet\Control\Session Manager\Memory Management key.
   4. Right-click the DisablePagingExecutive item and select Modify.
   5. In the Edit DWORD dialog box, change the value to 1.
   6. Click OK.