I can't log-in by using the default password.. log-in error always occurred..

This needs to be discussed in different situations, you can check whether these situations can solve your current problem.
Scenario 1: All Default Passwords Are Changed and All Passwords Are Forgotten If you change all default passwords and forget the console port login password, all STelnet/Telnet login accounts and passwords, and BootROM/BootLoad passwords:
·For a switch that has the PNP button, you can press and hold the PNP button for more than 6 seconds to restore the switch to factory settings and restart the switch. The following figure shows the PNP button.
·If the switch does not have the PNP button, return it to the factory for repair.
Scenario 2: Default Passwords Are Forgotten For S series switches running V200R020 and later versions, no passwords are configured for default accounts, and users must configure new passwords for logging in to the switches. In this situation, scenario 2 is not involved.
However, for S series switches running versions earlier than V200R020, there is no default STelnet/Telnet login password, but there are default console port login password, default BootROM/BootLoad password, and default web login password. These default passwords may vary according to the switch version.
If you always use the default passwords and have not changed the passwords, you can obtain the default accounts and passwords according to S Series Switches Default Usernames and Passwords (for enterprise users or carrier users). The permission level of this document is C (customer support level). If you need to upgrade the permission level, see the help document on the website.
Scenario 3: The Console Port Login Password Is Forgotten Three methods are available to recover the console port login password.
·Method 1: Log in to the device using STelnet or Telnet and change the console port login password.
·Method 2: Clear the console port login password in the BootROM/BootLoad menu and change the console port login password.
Scenario 4: The STelnet/Telnet Login Password Is Forgotten ·If you forget the login password of an STelnet/Telnet account, you can use another STelnet/Telnet account with administrator rights to log in to the device and reset the password. For details, see Method 1.
·If you forget the passwords of all STelnet/Telnet accounts but can log in to the device through the console port, see Method 2.

Method 1: Use an STelnet/Telnet Account with Administrator Rights to Log In to the Device and Reset the Password

1.Log in to the switch using the STelnet/Telnet account with administrator rights.
2.Change the STelnet/Telnet login password. The following example describes how to change the STelnet/Telnet login password of VTY0 to VTY4.

Method 2: Log In to the Device Through the Console Port and Set a New STelnet/Telnet Login Password

If you forget the STelnet/Telnet login password but remember the console port login password, log in to the switch through the console port and set a new STelnet/Telnet login password.
Scenario 5: The BootROM/BootLoad Password Is Forgotten but the Console Port/STelnet/Telnet Login Is Available If you can log in to the switch through the console port, STelnet, or Telnet, log in to the switch and restore the default BootROM/BootLoad password. You can obtain the default accounts and passwords according to S Series Switches Default Usernames and Passwords (for enterprise users or carrier users). The permission level of this document is C (customer support level). If you need to upgrade the permission level, see the help document on the website.
Scenario 6: The Web Login Password Is Forgotten but the Console Port/STelnet/Telnet Login Is Available If you can log in to the switch through the console port, STelnet, or Telnet, log in to the switch and reset the web login password. In the following example, the web login user name is admin123 and the password is test@123.
For more reference resources, please click to enter (ebook) CloudCampus 3.0 Solution:
https://support.huawei.com/enterprise/en/doc/EDOC1100201111
OR you can straight to see this decument
https://support.huawei.com/enterprise/en/doc/EDOC1100200698#section1612361212554

By default IE will always show 8 "dots" in the password box; this is so someone can't just look at the length of your password to try to guess it; IE isn't changing your password.

Netflix offers users the ability to rent movies and TV shows through the mail on DVD or Bluray and also allows users to watch select shows or movies online using a computer or certain other devices.

Occasionally users encounter errors when attempting to log in to their Netflix accounts.

These errors can be as simple as an incorrectly typed password to more complex issues with the Netflix service itself.
Credential Problems

Many login problems are caused by an incorrect email address or password when attempting to log in.

This can be due to typos or other misspellings, or recent password changes that were forgotten. Netflix offers the ability to recover passwords and usernames via the "Need Help Signing In?" link below the login fields on the Netflix home page.

Clicking the link allows the user to recover her password by entering her email address, and also gives the option to advance to a second recovery screen if she does not have access to that email address anymore.

The second screen allows the user to prove her identity by entering the first name, last name and credit card number associated with the Netflix account.

Service Errors

Login problems occasionally occur due to errors with the Netflix service itself.

When these problems occur, a message appears that explains a site error has occurred, directing the user back to the Netflix home page.

The user should attempt logging in again in case of a one-time error, though site-wide service errors do occasionally occur.

Depending on the nature of the error, once logged in the user may experience problems when trying to watch movies instantly or attempting to edit his DVD queue.

Site-wide service errors do not affect the ability of Netflix to send and receive movies by mail.

Account Problems

If a problem exists with a user's Netflix account due to a failed payment attempt, the user can still log in but is directed to a page informing him of the problem instead of his standard account home page.

Until the problem is resolved, he will be unable to watch movies instantly, receive DVD or Blu-ray discs from the service and will be required to return any movies currently at his home to avoid additional fees.

Account problems can typically be resolved by authorizing Netflix to retry the last payment attempt on the user's credit card or by supplying a new credit card number for payment purposes.


Device Connection Errors

When attempting to watch movies or TV shows on Netflix-ready devices such as a Nintendo Wii, Xbox 360 or Roku streaming media player connection errors sometimes occur while the device attempts to log in to the user's Netflix account.

These errors may occur because the Internet connection the devices use is not properly configured, limited bandwidth to and from the user's home or problems with the device-specific version of the Netflix service.

If the device cannot connect and log in to Netflix, the user should check the device's Internet connection and try connecting again later.

Netflix log-in problems
http://www.product-reviews.net/2010/10/21/netflix-down-login-problems-are-you-affected/

Netflix offers users the ability to rent movies and TV shows through the mail on DVD or Bluray and also allows users to watch select shows or movies online using a computer or certain other devices. Occasionally users encounter errors when attempting to log in to their Netflix accounts. These errors can be as simple as an incorrectly typed password to more complex issues with the Netflix service itself.

Credential Problems b> Many login problems are caused by an incorrect email address or password when attempting to log in. This can be due to typos or other misspellings, or recent password changes that were forgotten. Netflix offers the ability to recover passwords and usernames via the "Need Help Signing In?" link below the login fields on the Netflix home page. Clicking the link allows the user to recover her password by entering her email address, and also gives the option to advance to a second recovery screen if she does not have access to that email address anymore. The second screen allows the user to prove her identity by entering the first name, last name and credit card number associated with the Netflix account. Service Errors b> Login problems occasionally occur due to errors with the Netflix service itself. When these problems occur, a message appears that explains a site error has occurred, directing the user back to the Netflix home page. The user should attempt logging in again in case of a one-time error, though site-wide service errors do occasionally occur. Depending on the nature of the error, once logged in the user may experience problems when trying to watch movies instantly or attempting to edit his DVD queue. Site-wide service errors do not affect the ability of Netflix to send and receive movies by mail. Account Problems b> If a problem exists with a user's Netflix account due to a failed payment attempt, the user can still log in but is directed to a page informing him of the problem instead of his standard account home page. Until the problem is resolved, he will be unable to watch movies instantly, receive DVD or Blu-ray discs from the service and will be required to return any movies currently at his home to avoid additional fees. Account problems can typically be resolved by authorizing Netflix to retry the last payment attempt on the user's credit card or by supplying a new credit card number for payment purposes. Device Connection Errors b> When attempting to watch movies or TV shows on Netflix-ready devices such as a Nintendo Wii, Xbox 360 or Roku streaming media player connection errors sometimes occur while the device attempts to log in to the user's Netflix account. These errors may occur because the Internet connection the devices use is not properly configured, limited bandwidth to and from the user's home or problems with the device-specific version of the Netflix service. If the device cannot connect and log in to Netflix, the user should check the device's Internet connection and try connecting again later.

If you got to the router's interface by typing 192.168.0.1 and it requested the userid and password. If the password you enter did not let you in, then the password is wrong. Maybe someone changed the default userid and password to something else.

You can always press the reset button on the router to set it back to Factory Settings. Then the default userid and password will work, but you will have to set the wireless back up and configure the basic settings (if you have a userid and password that the phone company uses as the network userid and password. This is not your email address userid and password).

Maybe you mean log on password. If you never enter a password to log on, but suddenly when turning on the computer, you are prompted to enter a password to log on, but always failed. You try to log in using an administrator user but failed. Chances are, the operating system is infected with viruses.
So, the operating system has controlled the virus.

solution:
Install the new operating system (not repair the operating system)

first is the empowering password on the post or on the log in? if on the post you are pretty much out of luck if in the log in or in the os just re-install windows and you are good to go.

Hi,

Most of the NETGEAR devices have the following default username and password except ReadyNAS products and Fully Managed switches:

• Username is always admin
• Password is password or (for older devices) 1234

If you have changed the default password and have forgotten the password, you may need to reset the NETGEAR device to factory default settings.

Write down configuration information such as IP addresses, security keys, opened ports and services, etc., that you modified. (The default username is admin and the password is either password or 1234. Try these before resetting the router.)

1. Press the reset button on the back until the test light blinks. This takes about 10 seconds. (To avoid accidental resets, the small button is recessed. Use a pen or paperclip to access it.)
2. Release the button.
3. Wait for the router to reboot.
4. Log in with the default password. If the router configuration was not cleared, try these additional steps AFTER the router has finished rebooting.
   
5. Unplug the router's power.
6. Press and hold the reset button. While the button is held down, reconnect router's power.
7. Continue to hold the reset button for 20 seconds after reconnecting the power.
8. Wait for the router to reboot.
9. Log in with the default password.

Hope i helped you.

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