my yahoo messenger wont start anymore, at my first install of it it was running completely ic ould log in and log out without any problem,but after i turn off my pc.and tried to open it, it wont open up anymore,the yahoo messenger version i first installed was V.8,i tried to uninstall at and reinstall it,it still wont open up any more,also tried
V. 8.1 it also wont start or open.i also tried reformat my pc an tried reinstalling it,but still wont open up.what should i do know please help me..

previously posted on the software section.but after doing all the advices they gave me.it still does not start up or open.so we think that the software might not be the problem it might be my unit for having viruses?hope you could help me.

im using:

win XP
professional
version 2002
Service pack 3

Amd Sempron(tm)Processor
3000+
1.81Ghz, 1g ram


[recovering disk space -- attachment deleted by admin]Looking over your log, it seems you don't have any anti-virus software.

Before we continue download and install a free anti-virus software.

Remember to only install one antivirus!
 
1) Avast! Home Free Edition
2) AVG Free Edition
3) Avira AntiVir Personal
4) Comodo Antivirus
5) PC Tools AntiVirus Free Edition

Now run a new HijackThis scan and post the log.i had installed avg 8.0. please help me.after the installation of avg. the resident shield detected a threat.and i moved it to the volt.when i have done this.avg was telling me force removal of the said threat could cause system to crash.with this warning i still selected to force remove the object and know i cant access all my drives when i double click it or explore.is this what was avg telling me when i tried to remove it?i have tried system restore hoping that it would come back to normal but it was always restore incomplete.help me please.i dont want to format all my drives.i have files that are needed.help please.i saw the said threat.on the hijackthis log.
O4 - HKCU\..\Run: [kamsoft] C:\WINDOWS\system32\ckvo.exe this was the file that i forced remove 

[recovering disk space -- attachment deleted by admin]Open HijackThis and select Do a system scan only.

Place a check mark next to the following entries: (if there)

- O4 - HKCU\..\Run: [kamsoft] C:\WINDOWS\system32\ckvo.exe

Important: Close all windows except for HijackThis and then click Fix checked.

Exit HijackThis.

----------

Note: the below instructions were created specifically for this user. If you are not this user, DO NOT follow these directions as they could damage the workings of your system

Go to Start > Run and type notepad.exe then click OK

Copy the text in the Code box below and paste it into Notepad.

Code: [Select]REGEDIT4

[HKEY_LOCAL_MACHINE\software\microsoft\windows\currentVersion\Run]
"kamsoft"=-

In Notepad go to File > Save as...

Next to File name: type fixme.reg Use the dropdown box next to Save as type: and select All files. Save it to the Desktop.

There should now be a file on the Desktop that looks like this

Double-click fixme.reg it and allow it to merge with the Registry.

You may not see anything happen but give it a few seconds or so to finish.

Now delete the fixme.reg file from the Desktop.

----------

Download SDFix by AndyManchesta and save it to your desktop.

When using this tool, you must use the Administrator's account or an account with Administrative rights

• Double click SDFix.exe and it will extract the files to %systemdrive%
  
• (this is the drive that contains the Windows Directory, typically C:\SDFix).
  
• DO NOT use it just yet.

• Type Y to begin the cleanup process.
  
• It will remove any Trojan SERVICES or Registry Entries found then prompt you to press any key to Reboot.
• Press any Key and it will restart the PC.
  
• When the PC restarts, the Fixtool will run again and complete the removal process then display Finished, press any key to end the script and load your desktop icons.
  
• Once the desktop icons load the SDFix report will open on screen and also save into the SDFix folder as Report.txt.
  
• Copy and paste the contents of the results file Report.txt in your next reply.

Just try to do the same.. i hope it will fix your YM.. GudLuck..

what should i do now to prevent my previous problem from happening again

• Click START then RUN
  
• Now type Combofix /u in the runbox
  
• Make sure there's a space between Combofix and /u
• Then hit Enter.

• The above procedure will:
• Delete the following:
• ComboFix and its associated files and folders.
• Reset the clock settings.
• Hide file extensions, if required.
• Hide System/Hidden files, if required.
• Set a new, clean Restore Point.

• Under Main: Select Files to Delete choose: Select All.
  
• Click the Empty Selected button.
  
• If you use Firefox browser click Firefox at the top and choose: Select All
  
• Click the Empty Selected button.
  If you would like to keep your saved passwords click No at the prompt.
  
• If you use Opera browser click Opera at the top and choose: Select All
  
• Click the Empty Selected button.
  If you would like to keep your saved passwords click No at the prompt.
  
• Click Exit on the Main menu to close the program.

• Double-click OTCleanIt.exe.
  
• Click the CleanUp! button.
  
• Select Yes when the "Begin cleanup Process?" prompt appears.
  
• If you are prompted to Reboot during the cleanup, select Yes.
  
• The tool will delete itself once it finishes, if not delete it yourself.

• Click on SCAN NOW
  
• Click Accept.
  
• The program will then begin downloading the latest definition files.
• Once the files have been downloaded locate the Scan Settings and have it scan My Computer.
  
• The scan will take a while, so be patient and let it finish.

• Next, in the Save as prompt, Save in area, select: Desktop.
  
• In the File name area use KScan, or something similar.
  
• In Save as type: click the drop arrow and select: Text file [*.txt]
  
• Then, click: Save