Some PC gamers when attempting to start a game on their Windows 11 or Windows 10 computer, reported they encounter the error message Please unload BigKDriver.sys (helpsrv.sys, p.sys, iusb3hcs.sys, amdxhc.sys, etc) before starting the game. This post is intended to help affected users resolve this issue. Keep in mind that there are various instances of this error, the common element being that the game asks you to unload a sys driver file.
What is BigKDriver.sys?
BigKDriver.sys is a system file associated with Easy Anti-Cheat. The majority of Windows system files are stored in C:\Windows, especially in /System32 and /SysWOW64 subfolders. But, you’ll also find system files spread across user folders (like the Appdata folder) and app folders (like ProgramData or the Program Files folders).
What is helpsrv.sys driver?
The module helpsrv.sys has been detected as Trojan.Agent. The filw can be found or located at %windir%. The file belongs to a Product Name and Company name HelpSrv Network. To remove the file, run a full system AV scan.
What is p.sys driver?
Game effects file used by ZEQ2 Lite, a 3D fighting game; saves a particle physics effect, which specifies how player skills and actions are emitted in the 3D environment; used for character abilities such as attacks and magic spells. The file can be found in C:\Windows\Temp and/or can be found in the \effects\ subdirectory of the ZEQ2 Lite installation. They are saved in a plain text format. To get rid of the file, head over to the location and delete or rename the file.
What is iusb3hcs.sys?
The process known as Intel® USB (version 3.0 Host Controller Switch Driver) belongs to software USB 3.0 Host Controller Switch Driver by Intel. Iusb3hcs.sys is not essential for the Windows OS and causes relatively few problems. Iusb3hcs.sys is located in the C:\Windows\System32\drivers folder.
What is amdxhc.sys?
The amdxhc.sys file is part of AMD USB 3.0 Device Driver and developed by Advanced Micro Devices, INC. according to the amdxhc.sys version information. The amdxhc.sys’s description is “AMD USB 3.0 Host Controller Driver”. and is digitally signed by Advanced Micro Devices Inc. The amdxhc.sys file is usually located in the ‘c:\Windows\System32\DriverStore\FileRepository\amdxhc.inf_amd64_neutral_58bf2b068a2ef992\x64\’ folder. None of the anti-virus scanners at VirusTotal reports anything malicious about amdxhc.sys.
How to unload a Windows driver?
To unload a Windows driver, follow these instructions: Press Windows key + I to open Settings. Now, type Remove. Select Add or remove programs. If the device or driver package that you wish to remove appears in the list of programs, select uninstall.
Please unload helpsrv.sys, p.sys, iusb3hcs.sys, amdxhc.sys or BigKDriver.sys before starting the game
If a game asks you to unload a sys driver file on your Windows 11/10 gaming rig, you can try our recommended solutions below in no particular order and see if that helps to resolve the issue. The file could be any like – BigKDriver.sys, helpsrv.sys, p.sys, iusb3hcs.sys, amdxhc.sys, etc.
- Enable Driver Signature Enforcement
- Update drivers
- Uninstall and reinstall game
- Perform System Restore
Let’s take a look at the description of the process involved concerning each of the listed solutions.
1] Enable Driver Signature Enforcement
Easy Anti-Cheat requires Driver Signature Enforcement to be enabled. In this case, you can enable Driver Signature Enforcement and see if that helps. Otherwise, try the next solution.
2] Update drivers
This solution requires you to make sure all connected hardware on your Windows 11/10 computer is up to date.
You can either update your drivers manually via the Device Manager, or you can get the driver updates on the Optional Updates section under Windows Update.
You may also download the latest version of the driver from the manufacturer’s website.
3] Uninstall and reinstall the game
Depending on the game that’s triggering this error, you can simply uninstall the game and then reinstall it.
This solution requires you to uninstall the problematic game (preferably, use third-party software uninstaller), clear the game AppData folder contents, reboot the PC, and then download and reinstall the latest version of the game on your Windows 11/10 PC.
To clear/delete the game AppData folder contents, do the following:
- Press Windows key + R to invoke the Run dialog.
- In the Run dialog box, type the environment variable below and hit Enter.
- At the location, find (you may need to show hidden files/folders) the problematic game folder.
- Right-click the folder and select Delete. Confirm any additional prompts.
- Exit File Explorer.
Try the next solution if the issue persists.
4] Perform System Restore
If you noticed the error started to occur recently, it’s entirely possible that the issue was facilitated by a change that your system has gone through recently.
If you have no idea what changed that might be the culprit to this issue at hand, you can use System Restore (any changes like application install, user preferences and anything else made after the restore point will be lost) to revert to a date where you’re certain that the printer was working properly.
To perform System Restore, do the following:
- Press Windows key + R.
- In the Run dialog box, type rstrui and hit Enter to open up the System Restore Wizard.
- Once you arrive at the initial screen of System Restore, click Next to advance to the next window.
- At the next screen, start by checking the box associated with Show more restore points.
- After you’ve done this, select a point which has an older date than the one in which you first started to notice the error.
- Click Next to advance to the next menu.
- Click Finish and confirm at the final prompt.
At the next system startup, your older computer state will be enforced.
Hope this helps!
Why is Easy Anti-Cheat not working?
If Easy Anti-Cheat is not working on your Windows 11/10 PC, it’s most likely that the program has been uninstalled from your system. If you have uninstalled the Public Test Server (PTS) for a game and then launched the main game, you may receive this error message. To fix this, reinstall Easy Anti-Cheat – your game should be able to start.
What is the best anti-cheat?
Based on PC gamer’s recommendations, BattlEye is the gold standard of anti-cheat services. BattlEye is constantly evolving to make hacking ever-increasingly harder.