Default user and password

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 [email protected].
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

Probably you can access the settings through the operation screen on the machine.
There you may find this reset setting.

I found a manual here:
https://www.sharp.eu/cps/rde/xbcr/documents/documents/om/34_ppc/MXB382-SC_OM_Start-Guide_GB.pdf

There in it says:
Factory default passwords
When accessing the system settings, the administrator password is required to log in with administrator rights. The system settings can be configured in the Web pages as well as on the operation panel. To access the system settings using the Web pages, a password is also required.
Factory default administrator password is “admin”
Store a new administrator password as soon as the machine is installed.
Once the administrator password has been changed, the new password is required to restore the factory default password. Take care to remember the new password.
Factory default passwords (Web pages)
There are two factory default accounts: "Administrator" and "User". A person who logs in as an "Administrator" can configure all settings in the Web pages. In addition, an administrator can restrict access to other settings by enabling "User" accounts.
Default:
users with password users
admin with password admin

If this has been changed when the machine was installed you have a challenge to find out who changed it and if this person still knows it.

Straight from the users manual:
How to Access the Web-Based Utility To access the web-based utility, launch the web browser on your computer, and enter the Gateway's default IP address, 192.18.1.1, in the Address field. Then, press Enter. A login screen appears. Use the default user name and password, admn, unless you have changed them during the Setup Wizard. (You can set a new user name and password from the Administration tab's Management screen.) Click OK to continue. Here is the whole users manual. http://www.visiosys.com/support/documentation/06_Transmission/Modem_&_routeurs_WiFi/Linksys_WAG200G/WAG200G_Installation_manual.pdf

To access the web-based utility, launch the web browser on your computer, and enter the Gateway's default IP address, 192.168.1.1, in the Address field. Then, press Enter.
A login screen appears. Use the default user name and password, admin, unless you have changed them during the Setup Wizard. (You can set a new user name and password from the Administration tab's Management screen.) Click OK to continue.

You may refer to WAG200 User Guide if required. (Page-5&7)

Feel free to contract me for further assistance
Hope it helps! Good Luck!
CreativeTECH

If you don't have the current password, you will have to press the reset button located next to the power connector port. This will reset it back to factory default settings. The you can access it with your browser:

To access the Web-based management utility:

1 Open your Web browser and enter the IP address of the router into the
Location (for Netscape) or Address (for Internet Explorer) field, then press
Enter. The default IP address of the router is 192.168.0.1

For example, type 192.168.0.1

After the connection is established, the logon screen opens.

2 To log in as an administrator, enter the user name of admin and leave the
password field blank (default), then click OK. The Web management Home
screen opens.

You can download the user manual at:
http://www.retrevo.com/support/Dynex-DX-E401-Routers-manual/id/8352ag821/t/2/

here is the link to the user manual ...if you changed the admin password and cannot get in you will have to reset the router and put all new settings back in

the default user name is : wrt400 or wrt400n
and default password is admin
To access the web-based utility, launch the web browser on
your computer, and enter the Router’s default IP address,
192.168.1.1 or http://wrt400n.com in the Address field.
Then, press Enter.
A password request screen will appear. (Non-Windows XP
users will see a similar screen.) Leave the User name field
blank. The first time you open the web-based utility, use
the default password admin. (You can set a new password
on the Administration > Management screen.) Click OK to
continue.

http://www.abt.com/images/products/PDF_Files/wrt400n_manual.pdf

Reset There are two ways to reset the Router’s
factory defaults. Either press and hold the Reset
Button for approximately five seconds, or restore
the defaults from Administration > Factory
Defaults in the Router’s web-based utility.

How to Access the Web-Based Utility
To access the web-based utility, launch the web browser on
your computer, and enter the Router’s default IP address,
192.168.1.1, in the Address field. Then, press Enter.
A login screen will appear. (Non-Windows XP users will
see a similar screen.) Leave the User name field blank. The
first time you open the Web-based utility, use the default
password admin. (You can set a new password from the
Administration tab’s Management screen.) Click OK to
continue.

Uh... there are ways to discover the password, but for obvious reasons, can not be posted.
Try rebooting in safe mode and log in as administrator (the default password for this account usually is blank). Then move all your documents from
C:\Documents and Settings\"your user name"\My documents\
and
C:\Documents and Settings\"your user name"\Desktop
to a folder away from the My Documents folder.
The only "legal" solution is to delete your account and create a new one, though you will lose all your settings (wallpaper, etc).

The initial factory default Web Manager password is '1234' and the user name is ?admin?.

The initial factory default Web Manager password is '1234' and the user name is ?admin?. Doc ID: N100515.asp