How to repair missing User folders in Windows

Your default User folders in Windows 7 (My Documents, My Pictures, My Music, My Videos, Downloads, and Desktop).

The default locations for the User folders in Windows-

C:\Users\USERNAME\Desktop
C:\Users\USERNAME\Documents
C:\Users\USERNAME\Downloads
C:\Users\USERNAME\Music
C:\Users\USERNAME\Pictures

C:\Users\USERNAME\Videos

* Reset The USER Folder Setting
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders.

{374DE290-123F-4565-9164-39C4925E467B}  –>  %USERPROFILE%\Downloads
Desktop  –  %USERPROFILE%\Desktop
My Music  –  %USERPROFILE%\Music
My Pictures  –  %USERPROFILE%\Pictures
My Video  –  %USERPROFILE%\Videos

Personal  –  %USERPROFILE%\Documents

Types of Networks

1)    Local Area Network (LAN): Systems connected within the same geographical area is called LAN. A LAN can span 2 kilometers.

Components of LAN:

1.    .NIC (Network Interface Card)

2.    Cable – Co axial, cat5 or cat6

3.    Hubs or Switches.

2)    Metropolitan Area Networking: MAN is a combination of LANs or WANS located and connected within the same city.

Components of MAN:

1. Router

2. Brouter (Brouter is a combination of bridge or router)

3. ATM Switches

4. DSL connectivity (DSL – Digital Subscriber Link) ex: Star cables

.

     3) Wide Area Networking (WAN): Interconnection of LANs or MANs located within the same geographical area or different area it depends on telecommunication services.

Components of WAN: Same as MAN:

Fiber Optic cable....

A technology that uses glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.

A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing.