Manager Needs to Be Checked For Error 40
Whenever system comes up with error
40, we simply need to go to the windows device
manager. So, we can click on “Start” button and type
"sysdm.cpl" in the run command. After this
we need to click “Ok”. The System Properties window
will open and we need to click on the “Hardware” tab.
Here, we will see an icon called Device Manager. Under
this we need to locate the causing device. Now we need
double click on that icon and “Properties” option will
come up. We need to look for the “Device Status” box
and need to find a tab called “General” which will show
the any recent error regarding any device drivers.
Generally, error 40 looks like "Windows
cannot access this hardware because its service key
information in the registry is missing or recorded incorrectly
(Code 40)". It happens when there are invalid driver
service subkeys in the registry. Error 40
also happens, if the system is unable to locate the
In order to troubleshoot error 40,
we need to use a PC driver updating utility, so that
we could find the accurate driver for the device. Then
we need to uninstall the faulty driver. For this we
need to locate the device's properties box and then
need to choose the “drivers” tab. Once we locate the
right device type, we can right click on the icon and
click on “Scan” for any hardware changes. Now “Add Hardware”
wizard will pop up which will re-install the driver.
Now we need to click on the “General” tab under the
device's properties box in the Device Manager) and then
we need to select “Troubleshoot” to launch the troubleshooting
wizard. We need to follow the screen and error
40 will be finished.