If the message "Driver not loaded" appears into a the cFosSpeed menu after a cFosSpeed-installation, there can be several reasons.
Please first follow this steps:
Check if the cfosspeed installation in Windows Safe Mode is possible.
HINT: Please check your network adapters installation in detail!
At 'view', turn on the feature show hidden devices.
Also check the installation of the network adapters into the Windows safe mode!
The only way to detect precisely which network adapter conflicts with the installation of cFosSpeed is to go through with the check-up one by one.
To do that we recommend the following procedure:
With this method you can find out which network adapter causes the problem. Now you can remove the binding with the cFosSpeed protocol from this particular adapter.
Firewall, virus-protection and other security software often also installs "virtual" network adapters. Please remove the bindings for these adapters, too.
The starting of the cFosSpeed service (cfosspeed6.sys) must be allowed by all security programs (Firewall, Anti-Spy- , Anti-Virus-Software, etc.).
Make sure the file cfosspeed6.sys. in the directory C:\Windows\System32\Drivers\ exists.
If your security software conflicts with cFosSpeed, please try the following:
This procedure works for: Kaspersky Internet Security 2010, ZoneAlarm Pro (v 9.3.037.000)
You need to ignore all warnings concerning the digital signature of cFosSpeed during the installation. You should continue the installation if this message appears. Please re-install cFosSpeed taking care of this point.
In some cases a solution was to reset the Internet Protocol (TCP/IP) in Windows XP. This avoids an annoying complete new installation of Windows. You can find an official describtion here: How to reset Internet Protocol (TCP/IP) in Windows XP
You can also use the program WinSock XP Fix to do the reset automatically.
In case you experience install problems with cFosSpeed version 10.12 or higher on Windows 7 please check if this Windows Security Update does help:
Security Update for Windows 7 (KB3033929)
Security Update for Windows 7 for x64-based Systems (KB3033929)
...please send us these files:
As an additional step you can install cFosSpeed using the Option -ide
Save the installation file (i.e., cfosspeed-400.exe) on your system (i.e., at c:\install\) and start it via START/Init/ using the command 'c:\install\cfosspeed-400.exe -ide'. Afterwards please send us the files indicated above.