CODE 18 and CODE 28

Question

I am using a laptop and i have installed Windows 7 and it also installed all my driver's program, but three of my drivers are not installed and they didnot installed when i used online installation. They are named under Memory technology driver and they are Base System, Unknown device and Unknown device. The two unknown device shows error CODE 28 and the other shows CODE 18,  and this Base System Device's Device status shows "Reinstall the drivers for this device. (Code 18)" but it doesn't work either.

Answer 1

Hi,   

Welcome to Microsoft Windows 7 Answers Forum! 

You need to follow the error codes and their troubleshooting below.

For Code 18 and Code 28 you need to Uninstall and reinstall the driver

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In order to troubleshoot this issue you may goahead and uninstall the drivers manually and then reinstall the drivers and check for the issue.

Uninstall and reinstall the driver for the hard drive from device manager. To do that follow the below provided steps:

i.                  Click Start, type devmgmt.msc in search box and hit enter.

ii.                 On the “Device Manager” window, Select the device

iii.                Right Click on the device and click uninstall

iv.                Restart the computer once the driver is uninstalled.

v.                  Install the latest drivers from the manufacturer and check if it works

Also you may follow the link provided below for further information.

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http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly

If you could post back the details( make and model ) of your laptop, then it will be helpful for us to send you the details of the drivers present for your laptop.

Thanks and Regards:

Suresh Kumar- Microsoft Support.

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