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How to eliminate viaagp1 driver problems

The viaagp1.sys (VIA NT AGP Filter) file is a Windows driver. Generally, drivers are used by Windows to enable internal components like graphic cards and drives, or external devices, such as printers, backup media or input devices.
Click here to check if you need to update your viaagp1 driver.

The viaagp1.sys process is also known as VIA NT AGP Filter and is a part of VIA CPU to AGP2.0/AGP3.0 Controller or, as the case may be, VIA Tech CPU to AGP Controller. This software is produced by VIA Technologies (www.via.com.tw). An obsolete or defective version of viaagp1.sys can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about viaagp1.sys VIA NT AGP Filter

viaagp1.sys is not part of Windows, but it is important nonetheless. Viaagp1.sys is found in the C:\Windows\System32\drivers directory. Frequently occurring are file sizes such as 27,904 bytes (57% of all these files), 27,648 bytes, 32,128 bytes or, as the case may be, 26,880 bytes.
If necessary, you can manually stop or start this driver in the Device Manager. The Device Manager can be found in Windows Control Panel under Hardware and Sound/Devices and Printers/Device Manager. The driver facilitates access to your computer's hardware and accessories. This viaagp1.sys process does not appear as a visible window, but only in Task Manager. It is unusual for the service not to provide any indication of how and why it is required. Viaagp1.sys is no part of Microsoft Windows. The original file was created by Microsoft. The file itself can therefore be considered trustworthy. viaagp1.sys appears to be a file that was compressed by an EXE-Packer. This technique is often used by trojans to keep the file size small and also hamper debugging efforts. However, this in itself is not sufficient reason to presume malicious intent, since even well-intentioned, professional software producers take advantage of compressed files. For this reason, 16% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves viaagp1.sys. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about viaagp1?

windows repair asked for this file
cochise1
This file is a driver for the following ASRock motherboard K7VT2 check ASROCK for the viaagp1 diriver
K Mallonee
Driver File for AGP filter software
its a driver for agp slot.
Eric
When you upgrade XP SP2 it asks for this file
John

Summary: 40 users judge viaagp1.sys to be an essential file that should not be touched. 8 users consider it harmless. However, 2 users consider this to be a suspicious process and would like to get rid of it. source: file.net

How to uninstall VIA CPU to AGP2.0/AGP3.0 Controller or VIA Tech CPU to AGP Controller

viaagp1.sys VIA NT AGP Filter fix

To remove VIA NT AGP Filter from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for VIA CPU to AGP2.0/AGP3.0 Controller or VIA Tech CPU to AGP Controller in the list of available programs.
  5. Click Uninstall.

How to tell if viaagp1.sys (VIA NT AGP Filter) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of VIA NT AGP Filter. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for VIA NT AGP Filter or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or viaagp1.sys is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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