How to install 8051 and AVR ISP Programmer driver in Windows 8.1

If you are trying to install 8051 and AVR ISP Programmer's driver in your system, then your system will through a error in driver signature error in Windows 8.1. This is because the driver does not have signature. This can be solved by disabling the driver signature enforcement.

To download the driver click here.

Steps to install 8051 and AVR ISP Programmer drivers in Windows 8.1:

1) Connect the device to the system a window will be shown as below. It may take some time.


2)Then move your cursor to the right top or bottom corner of your window. In search option search "Change advanced startup options"



3)Select Recovery column. Selet Restart now button.



4)Wait until your system reboot. A new window will be shown as shown below. There choose Troubleshoot.



5)Select Advanced Option.



6)Select Start-up settings.


7)Click Restart Now.


8)Press F7 key then your system will restart now.



9)Right click the computer icon and select Manage.



10)Select Device Manager. In Other devices Right click USBasp and select Update Driver Software.



11) Select Browse my computer for driver software.



12)Choose the file and and click next.



13)Choose install the driver software anyway, wait until it completes.



14) See the below image to check it is installed correctly or not.



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