Nothing is opening on my laptop

Try a clean uninstall reinstall of Yahoo messenger.
Assuming that your Operating system is Windows XP. First go to Start>Control Panel> Add/Remove Programs
Select Yahoo Messenger & Click on Remove. Once it is completed, Open My Computer > Local Disk C:\Program Files\Yahoo! and delete this folder.
Delete the folders below if exists.
C:\Documents and Settings\Administrator\Local Settings\Application Data\Yahoo
C:\Documents and Settings\All Users\Application Data\Yahoo!
Then download the latest version from the Yahoo website and install it.
Hope this helps. Good Luck.
~SmokinJoe~

Try to remove yahoo messenger and re-install it again.
If you can't uninstall it try this:
1) Log out of Yahoo Messenger and close yahoo messenger completely [ it should not be running under task manager as a process ]. 2) Open Start Menu >> Control Panel. 3) Double-click on Add or Remove Programs. 4) Locate Yahoo Messenger in Add or Remove Programs. 5) Click Change/Remove button. 6) Restart your computer, if it doesn't restart it automatically. 7) Open Yahoo folder in Program Files (C:\Program Files\Yahoo) and delete it. 8) Open registry through Start Menu >> Run and type regedit now navigate to the HKEY_CURRENT_USER\ Software\ registry entry, delete Yahoo, and exit the Registry.
If the above method does not work for you, try the following methods to solve the problem.
1. Open Program Files >> Yahoo Messenger and find the file UNWISE.exe file. Double click this to run it. This will un install yahoo messenger.

Thank you for your question.

First, uninstall your Yahoo Messenger:

1. Quit Yahoo! Messenger for Mac.
2. Click the Finder icon on the Dock, then select Applications.
3. Drag the Yahoo! Messenger application to the Trash.
4. From the Finder window, select Home.
5. Open the Library folder ' open the Caches folder.
6. Drag the Yahoo! Messenger folder to the Trash.
7. Click the Back button to go back to Library.
8. Open the Preferences folder.
9. Find the files that start with com.yahoo.messenger ' drag them to the Trash.

Note: If you can't find these files in the "Preferences" folder, look for a folder called com.yahoo.messenger3 and drag it to the Trash.

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OPTION TO TRY YAHOO MESSENGER FOR MAC:

If you want to get it to work and try again, try installing the new Yahoo Messinger for the Mac. Go to http://messenger.yahoo.com/mac

This should clear most problems.

: )

Please check if your firewall isn't blocking Yahoo Messenger. Go to Control Panel --> Windows Firewall then second bookmark on top. Add Yahoo Messenger to exceptions.

Have you looked in your Downloads folder on your computer? The install files may be there ready to be installed. First thing I would do is go into your Control Panel (START >> Control Panel >> Add/Remove Program) and make sure that the old yahoo messenger is completely uninstalled.
Also, just for good measure, are you in a different country or your time zone/date settings set for a different country? That would make yahoo give you a foreign language program automatically.
Here is the direct link I just used to download Yahoo Messenger: http://messenger.yahoo.com/
Good luck!

81003004

Install ccleaner and remove the Yahoo messenger Entry From the installed program list. Then manually delete the yahoo folder in ur program files folder. Then install your yahoo messenger. If you still have the problem u can use other messengers like trillian or meebo which acts as an alternate messenger to chat wid ur yahoo friends.

left click start go to ((control panel)) left click
control panel

((((num1))) if you have classic view left click programs and features left click to open>>>>left click yahoo to unistall

(((num2))) if you have the Control Panel Home under
program left click ((uninstall a program)) delete yahoo there

now go back to start left click ((( search )))
type in yahoo delete all yahoo files there
restart your pc

TRY INSTALLING MESSENGER VERSION 8.1 COMPATIBLE WITH VISTA HERES THE LINK HOPE IT HELPS.....http://messenger.yahoo.com/download/vist...
IF SO RATE ME PLZE...

try uninstall again the yahoo messenger select complete uninstall, remove also backup data if system ask and after uninstall complete go to C:\Program Files\Yahoo! folder and delete Messenger folder, remove also in recycle bin, restart your computer and install yahoo messenger again. I suggest to install the Yahoo Messenger Full Standalone Installer, you find this at google search.

you might have installed third-party plug-ins, audibles or emoticons on your yahoo messenger. these programs are automatically loaded everytime yahoo messenger starts. they work fine, not until you reinstall yahoo messenger or upgrade it to a newer version causing an internal error when they are loaded. first, remove/uninstall all these programs from the add/remove programs in the control panel, be very careful when doing so and be very sure of what you are removing. then uninstall yahoo messenger. if error still occurs during the uninstallation process, you haven't removed every program/emoticons/plugins connected to your yahoo messenger. when uninstallation is successful, restart your computer and then delete the yahoo messenger folder in the programs folder on your system hard drive. then you can reinstall yahoo messenger before adding/installing your emoticons or plug ins again.