REGEDIT.EXE Key Shortcuts

Searching
"Ctrl+F" -- Opens the Find dialog box.
"F3" -- Repeats the last search.

Browsing
"Keypad +" -- Expands the selected branch.
"Keypad −" -- Collapses the selected branch.
"Keypad *" -- Expands all the selected branch's sub keys.
"Up Arrow" -- Selects the previous key.
"Down Arrow" -- Selects the next key.
"Left Arrow" -- Collapses the selected branch if it's not collapsed;
otherwise,selects the parent key.
"Right Arrow"--Expands the selected branch if it's not already
expanded;otherwise,selects the key's first sub key.
"Home" -- Selects My Computer.
"End" -- Selects the last key that's visible in the key pane.
"Page Up" -- Moves up one page in the key pane.
"Page Down" -- Moves down one page in the key pane.
"Tab" -- Moves between the key and value panes.
"F6" -- Moves between the key and value panes.

Other
"Delete" -- Deletes the select branch or value.
"F1" -- Opens Regedit's Help.
"F2" -- Renames the selected key or value.
"F5" -- Refreshes the key and value panes.
"F10" -- Opens Regedit's menu bar.
"Shift+F10" --Opens the shortcut menu for the selected key or value.
"Alt+F4" -- Closes Regedit.

Enable/Disable USB devices

Enable/disable USB Mass storage devices

Open regedit and browse to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

Find the 'Start' key.
Change this value to 4 to disable USB storage devices.

Change this value to 3 to enable USB storage devices.

Win Xp fast Shutdown

STEP--1

Open REGEDIT and navigate to 'HKEY_CURRENT_USER\Control Panel\Desktop\'
Highlight the 'WaitToKillAppTimeout' value.
Set it to '1000' (the default should be 20000).
Now highlight the 'HungAppTimeout' value
Set it to '1000' also.

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STEP--2

Open REGEDIT and navigate to 'HKEY_USERS\.DEFAULT\Control Panel\Desktop'
Highlight the 'WaitToKillAppTimeout' value.
Set it to '1000' (the default should be 20000).
Now highlight the 'HungAppTimeout' value.
Set it to '1000' also.

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STEP--3

Open REGEDIT and navigate to 'HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\'
Highlight the value 'WaitToKillServiceTimeout'
Change this value to '1000.'

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do every step carefully ................