The genuine STacSV64.exe file is a software component of IDT High-Definition Audio by Tempo Semiconductor, Inc..
Tempo Semiconductor's HD-Audio (and AC-97) audio codec programs originated with Sigmatel, which was acquired by IDT in 2006, and are now sold and serviced by Tempo, a non-fabricating private company in Austin, TX, USA. The STacSV64 module runs on 64-bit machines as a Windows service. It is reportedly high in CPU usage but can be disabled through the Task Manager for a faster CPU without harming audio quality because it is not the primary executable but the equalizer software; it will return at reboot. The IDT Audio software can be uninstalled via the Control Panel.
STacSv64 stands for SigmaTel audio codec Service for 64-bit Windows
The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the STacSV64.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
The process known as IDT PC Audio or STacSV Module or stacsv64.ex or IDT PC Audio TPE or IDT PC Audio - SHANGHAI DEVELOPMENT CENTER
belongs to software IDT Audio or IDT PC Audio or Tempo Semiconductor or IDT Audio Driver or SigmaTel Audio or Audio Service or Tempo PC Audi or SigmaTel Audio Service
by IDT (www.idt.com) or Tempo Semiconductor or SigmaTel (www.sigmatel.com).
Description: STacSV64.exe is not essential for Windows and will often cause problems. The STacSV64.exe file is located in a subfolder of "C:\Program Files".
Known file sizes on Windows 10/8/7/XP are 321,536 bytes (14% of all occurrences), 339,456 bytes and 35 more variants.
The program has no visible window. STacSV64.exe is not a Windows system file. STacSV64.exe is able to hide itself. Therefore the technical security rating is 34% dangerous, however you should also read the user reviews.
Recommended: Identify STacSV64.exe related errors
If STacSV64.exe is located in a subfolder of C:\Windows\System32, the security rating is 16% dangerous. The file size is 244,736 bytes (31% of all occurrences), 240,128 bytes and 8 more variants. The program has no visible window. It is a Microsoft signed file. STacSV64.exe is not a Windows system file. STacSV64.exe is able to hide itself.
Important: Some malware camouflages itself as STacSV64.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the STacSV64.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with STacSV64. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the STacSV64.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.