Launch Internet Options window from Command Prompt

Internet Options window can be launched from command prompt by executing the command

inetcpl.cpl

How to delete unwanted TCP/IP Printer Ports on Windows?

HKEY_LOCAL_MACHINE\SYSTEM\Currentcontrolset\Control\Print\Monitors\Standard TCP/IP Ports

Remove the entire key (folder) with the name of the port you are deleting.
Restart Windows or the Print Spooler service after deleting that key.

Source: Technet

How to find MAC address in Windows Command Line

getmac -v

or

ipconfig -all (this command will show the IP address as well)

How to turn on / off Windows firewall using Command Line

Turn Off:
NetSh Advfirewall set allprofiles state off

Turn On:
NetSh Advfirewall set allrprofiles state on

When you attempt to uninstall a software in “Programs and Features”, you get an error message: “Error opening installation log file. Verify that the specified location exists and is writable.”

When you attempt to uninstall a software in “Programs and Features”, you get an error message:
“Error opening installation log file. Verify that the specified location exists and is writable.”

Solution:
Stop the Explorer.exe process with Task Manager.
Then restart:
Go to File > New Task(Run)

Simply type explorer.exe in the new task box to restart the explorer, then click to OK.

Now, you can uninstall any software.

Source: Microsoft

Windows error messages (and translate)

You can get the meaning of Windows error messages the links below in English.
But if you have an error message in english, you can translate it for your language with theese tools - Useful sites to translate Windows error messages from any language to English

And the sites with Windows error messages:

Win32 Error Codes - http://msdn.microsoft.com/en-us/library/cc231199.aspx

System Error Codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx

Windows Error Lookup Tool (WELT) - http://www.majorgeeks.com/files/details/windows_error_lookup_tool_%28welt%29.html

http://www.finderr.net/

Remove or reset BIOS password from Windows

This method works with Acer TravelMate 2490 laptop with Windows 7, but by the included cmospwd.txt works other BIOS versions and PCs or laptops.

Download and extract to a folder this software:
http://www.cgsecurity.org/cmospwd-5.0.zip
( Info: http://www.cgsecurity.org/wiki/CmosPwd )

Log on to Windows as Administrator priviledges, or run an command prompt with administrating priviledges (Click Start-->Run: type CMD hit Ctr+Shift+Enter)
cd to the extracted directory (e.g. cmospwd-5.0)
then in cmospwd-5.0 cd to windows directory

To work on cmos memory, ioperm need to be installed and running. ioperm gives direct port I/O access for specified ports to user-mode process.

when you are already in e.g. \cmospwd-5.0\windows directory: type “ioperm.exe –i” hit enter.
to start ioperm service: type “net start ioperm” hit enter.
type: “Cmospwd_win.exe /k” hit enter, we will see:

1 - Kill cmos
2 - Kill cmos (try to keep date and time)
0 - Abort
Choice :

Type 1 and hit Enter to clear cmos or 2 to keep date and time.

Reboot computer and former BIOS password gone.

WARNING: You should disable or uninstall ioperm

with "ioperm.exe -u" if you don't want to decrease

your security!

Source: forums.mydigitallife.info

About more BIOS remover methods (default BIOS password and hardware reset) see:
http://www.askvg.com/how-to-reset-remove-bypass-a-bios-or-cmos-password/
http://www.youtube.com/watch?v=uY0wZMqNzmw
http://www.youtube.com/watch?v=9aslVZsiYdw
http://www.youtube.com/watch?v=__Dzl3cB_6k

HP LaserJet 1200 Alternate Print Driver in Windows 98

If original CD is missing, you can download it from here.
Or alternate driver: Windows 98 own HP Laserjet 6L PCL driver.

How to backup and restore Skype profile on Windows?

How do I back up my configuration and instant message history (Winodws XP/Vista/7/8)?
https://support.skype.com/en/faq/FA413/how-do-i-back-up-my-configuration-and-instant-message-history

After reinstalling your Windows, copy back your saved Skype folder to the new system's Skype directory (overwrite it).

Uninstall / remove ESET NOD32 file on-access scanner

If you uninstalled ESET NOD32 file on-access scanner, but you could not install e.g. Kaspersky Antivirus for Windows workstations, delete this key from the windows Registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\eamon

Opening and editing huge text files on Windows

On Linux it's very simple.

If you use Windows, you can do it with the editor of Total Commander (F3/F4).
We edited a 600MB size text file.

Or you can use these free progs as well:

PSPad - http://www.pspad.com
Context - http://www.contexteditor.org
PilotEdit Lite - Advanced Text Editor That Can Handle Files Larger Than 50 GB

Far Manager - http://www.farmanager.com/download.php?l=en