My netbook wont let me log on, and is telling that my password is wrong. How can I logon?

when your netbook starts up, press f8 and from the following menu, choose to start using safe mode with gui. If you have specified an administrative password at the time of windows installation, use that to log on. If you have not, you should be able to simply log on with the administrative account. Now, go to the control panel>user accounts and create a new user account. Now, you should be able to logon using the new user account. Make this one an administrative/standard account instead of a limited one. When you logon using this account, you should be able to get your data of the previous account from C:\Users\<previous profile name>... You can take backup of this data and then delete the previous user profile to avoid further confusion.

Hope this helps.

Shut down the laptop..restart in safe mode, once you are in safe mode, try to go to a restore point before the issues started...you should be able to clear this up...

7 ways to boot into Safe Mode in Windows 10 Digital Citizen

5 Ways To Boot Into Safe Mode In Windows 8 1

Need to Start Windows 7 in Safe Mode Here How

you can try to see if they have set an administrator password, start the computer in safe mode (Hold down F8 when booting) and when it boots click on the administrator logon icon, if there is no password (as there sometimes isn't) you can log on and go to the user control in control panel and create a new user. then re-start and logon using the new account you created.

Assuming that you mean the Windows log in password, try using blank (none) as password (otherwise at the log on screen hit "enter"). If this doesn't work log on at the administrator's account. To do this if you can see the administrator's icon click on it and use blank (none) for password again. If you can't see the administrator's icon, hit ctrl+atl+del TWICE and type as user "administrator", blank (none) for password and hit enter. After you log on as administrator change your user's account as you wish and you are ready to go.

In case of a problem or clarification or further details needed, don't hesitate to post me a reply before rejecting my answer.
If you are satisfied, rate my solution with the "thumbs" or (even better) add a testimonial.

Thanks and regards
Please kindly rate this solution
Stelios
direct fixya link: http://www.fixya.com/users/technical114

at Windows XP's Welcome Screen, simply press Ctrl-Alt-Del keys sequence together twice, and you will be shown a Log On to Windows menu where you can specify the User Name and Password. In the User Name text box, key in "Administrator" (without quotes) and leave the Password field blank. Then press Enter or click on OK. If there it is not a password protected Administrator account, or blank password is set, then you will be able to access the Windows with full administrative privileges as Administrator.

Then simply click start > control panel > User accounts then select your sons account and click edit then click remove password. once done simply log off and then log in to your sons account and no password will be asked for. If your son is the root administrator then you will need to get software to reset the password for you

Try 'Administrator' and "blank".
If you get logged-in, you can change the password for the 'User' ID.

Try booting to safe mode normally F8 at start up and adding a new user make sure to give admin level

You startup ur system through safe mode with command prompt. select administrator. in the DOS, type "control userpassword" it will request for new password. Enter new pasword. Restart the system. Logon to ur using the new password

Is your CAPS LOCK on?
Try logon as "Administrator" without a password.

At your logon screen, press all three together:
[Ctrl] [Alt] [Delete]

did u try to logging in with out entering any password????????????