Audio Playing Once Logged In

Your definately infected and thats exactly what is causing it, a service. You can either try doing a system restore back to when it wasn't there or starty scanning for malware. Providing your not running windows 8 please do the following.

Download and Run ComboFix
If you already have Combofix, please delete this copy and download it again as it's being updated regularly.
  • Download this file here :

    Combofix

  • When the page loads click on the blue combofix download link next to the BleepingComputer Mirror.
  • Save the file to your windows desktop. The combofix icon will look like this when it has downloaded to your desktop.

    cf-icon.jpg
  • We are almost ready to start ComboFix, but before we do so, we need to take some preventative measures so that there are no conflicts with other programs when running ComboFix. At this point you should do the following:

  • Close all open Windows including this one.
  • Close or disable all running Antivirus, Antispyware, and Firewall programs as they may interfere with the proper running of ComboFix. Instructions on disabling these type of programs can be found here.
    Once these two steps have been completed, double-click on the ComboFix icon found on your desktop. Please note, that once you start ComboFix you should not click anywhere on the ComboFix window as it can cause the program to stall. In fact, when ComboFix is running, do not touch your computer at all. The scan could take a while, so please be patient.
  • Please click on I agree on the disclaimer window.
  • ComboFix will now install itself on to your computer. When it is done, a blue screen will appear as shown below.

    cf-preparing.jpg

  • ComboFix is now preparing to run. When it has finished ComboFix will automatically attempt to create a System Restore point so that if any problems occur while using the program you can restore back to your previous configuration. When ComboFix has finished creating the restore point, it will then backup your Windows Registry as shown in the image below.

    erunt.jpg

  • Once the Windows Registry has finished being backed up, ComboFix will attempt to detect if you have the Windows Recovery Console installed. If you already have it installed, you can skip to this section and continue reading. Otherwise you will see the following message as shown below:

    recovery-console-prompt.jpg

  • At the above message box, please click on the Yes button in order for ComboFix to continue. Please follow the steps and instructions given by ComboFix in order to finish the installation of the Recovery Console.
  • Please click on yes in the next window to continue scanning for malware.
  • ComboFix will now disconnect your computer from the Internet, so do not be surprised or concerned if you receive any warnings stating that you are no longer on the Internet. When ComboFix has finished it will automatically restore your Internet connection.
  • ComboFix will now start scanning your computer for known infections. This procedure can take some time, so please be patient.
  • While the program is scanning your computer, it will change your clock format, so do not be concerned when you see this happen. When ComboFix is finished it will restore your clock settings to their previous settings. You will also see the text in the ComboFix window being updated as it goes through the various stages of its scan. An example of this can be seen below.

    still-scanning-clockchanges.jpg

  • When ComboFix has finished running, you will see a screen stating that it is preparing the log report.
  • This can take a while, so please be patient. If you see your Windows desktop disappear, do not worry. This is normal and ComboFix will restore your desktop before it is finished. Eventually you will see a new screen that states the program is almost finished and telling you the programs log file, or report, will be located at C:\ComboFix.txt.
  • When ComboFix has finished, it will automatically close the program and change your clock back to its original format. It will then display the log file automatically for you.
  • Now you just click on the edit menu and click on select all, then click on the edit menu again and click on copy. Then come to the forum in your reply and right click on your mouse and click on paste.

If for some reason, if you try to run a program or open a file and you get an error message saying "illegal operation attempted on a registry key that has been marked for deletion", please just reboot your pc and you'll be fine.


In your next reply please post:
  • The ComboFix log
  • An update on how your computer is running
 
Troncoso, are you using Windows 8 with an ASUS motherboard?

This sounds to me like the device connect/disconnect sound which Windows 8 has. I used to have this problem (but periodically) with Windows 8 and it turned out to be a bad audio driver if memory serves me correctly. I think some of the older ASUS or Realtek audio drivers had problems with 8.

What I did was just remove my existing driver and downloaded a new one from the ASUS website (since I have an ASUS board) and the problem was fixed. I would suggest firstly trying to update your audio drivers and then if the problem isn't fixed (or if you aren't running Windows 8), follow John's advice.
 
Wow. I can't believe I didn't mention it was Windows 8. I'm slacking. It's a prebuilt system from HP (this is my work PC (guess I could have had the IT guys look at it)) so it's not an ASUS board. I'll try doing a virus scan and updating the drivers before hitting up IT.
 
A basic virus scan didn't show anything and updating the drivers did nothing. I did a system restore and it made Windows unbootable. I was able to revert that, but at this point, IT is just going to replace my PC. I've had other problems up to now, and it's just hurting my productivity to keep dealing with this stuff.
 
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