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Fri, Feb 13, 2015 10:45 pm

Hiding an Account from the Windows 7 Welcome Screen

To hide an account from the Microsoft Windows 7 welcome screen, take the following steps:
  1. Click on the Start button.
  2. Type regedit in the "Search programs and files" field and hit Enter.
  3. When prompted if you want to allow the program to make change to the system, choose "yes".
  4. Navigate to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\
  5. Right-click on Winlogon and choose "New" then "Key" and put SpecialAccounts for the key name.
  6. Right-click on SpecialAccounts and choose "New" then "Key" and put Userlist for the key name.
  7. Right-click on UserList on the left side of the window and select New and then DWORD (32-bit) Value.
  8. You'll see the new entry in the right pane of the window, rename this value, which by default will be labelled "New Value #1", to the name of the user account you want hidden. It should be exactly how it is listed on the welcome screen you see when the system starts. Leave the value at 0.
  9. You can then close the registry editor by clicking on File then Exit.

Now when you logoff, you shouldn't see the hidden account on the welcome screen. If you still see it, reboot.

Note: unlike with hidden accounts under Windows XP, you can't log into a hidden account by hitting the Ctrl, Alt, and Del keys.

[/os/windows/win7] permanent link

Fri, Feb 13, 2015 4:50 pm

Countif greater than or equal to a date

If you want to determine the number of entries in a spreadsheet that have a date value that is greater than or equal to a particular date, you can use the COUNTIF function in Excel. E.g., if you had dates in column G rows 4 through 959 and wished to know the number of rows with a date that was greater than or equal to October 15, 2014, you could use the formula below, assuming you are using the common U.S. style of date in the form mm/dd/yyyy.

=COUNTIF(G4:G959,">=10/15/2014")

Suppose, instead, that you had a date in F970 and you wished to use whatever date you had in that cell for the date comparision operation. You could then use the following formula:

=COUNTIF(G4:G959,">="&F970)

The ampersand before the F970 concatenates the value in that cell to the string >=, so that if cell F970 contains the date value 10/15/2014, COUNTIF will only count cells containing a date greater than or equal to that date.

[/os/windows/office/excel] permanent link

Fri, Feb 13, 2015 4:38 pm

Paste stopped working on OS X 10.8.5 laptop

On a MacBook Pro running OS X 10.8.5, the paste operation stopped working. I didn't receive any error messages whenever I tried to copy text in an application, but if I then tried to paste anything into that application or any other, nothing would be pasted. Copying and pasting didn't work with Command-C and Command-V nor by selecting the copy and paste functions from applications' menus. Nor did cutting with Command-X and then pasting with Command-V work.

When I went to Edit and selected Show Clipboard within the Finder, I saw "Clipboard contents: none".

The solution I found after some online searching was to kill the PasteBoard, aka clipboard, process and restart it. That allowed me to use copy and paste without rebooting the computer.

$ ps -A | grep pboard | grep -v grep
  464 ??         0:00.03 /usr/sbin/pboard
$ kill -s HUP 464
$ ps -A | grep pboard | grep -v grep
$ 
$ launchctl start com.apple.pboard
$ ps -A | grep pboard | grep -v grep
49810 ??         0:00.00 /usr/sbin/pboard

To be able to use copy and paste after restarting the pboard process, you will need to close and reopen any application in which you need to copy and paste data after you restart the process. You won't see data that is copied appear in the clipboard shown by the Finder until you restart the Finder, which you can do by clicking on the Apple icon at the top left of your screen and then selecting Force Quit, then clicking on Finder within the Force Quit Applications window to select it, and then clicking on the Relaunch button. After you do that, you can click on Edit and Show Clipboard within the Finder and see what was previously copied into the clipboard before restarting the Finder.

If you have an application open that was open before you restarted the PasteBoard, if you try copying something from it, it won't appear in the clipboard. You will have to restart that application to copy anything from it.

[/os/os-x] permanent link

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