Nowadays Laptops come preloaded with Windows 8 OS. For our Embedded software installation it is not possible to install Drivers , as WIN8 has added security against unsigned drivers.
For Windows 8 to accept drivers , we’ve to disable the security measure of testing unsigned drivers.
Particularly while trying to install AVR USB drivers ,this security measure won’t allow you to install the drivers.
Follow the steps explained below to over ride this problem.
Under Charms bar click on the Gear icon “Settings”
On next screen click on “Change PC Settings”
On PC Settings screen under General scroll down to bottom to select “Restart Now “under Advanced StartUp
Click On Trouble shoot option
Click On Advanced Options under Troubleshoot screen
Select StartUp Settings
Click Restart
A list of Start Up Settings appear. Press number 7 on your key board to Disable Driver Signature Enforcement.
Now your PC reboots with driver signature enforcement disabled.
Once you did this you will be able to install unsigned drivers.
Now connect your USBasp programmer to the USB port of your laptop. Ignore the message that ‘Device driver software was not successfully installed’.
Download USBasp drivers here
and extract it somewhere on your PC.
Go to Device Manager in control Panel and you will find ‘USBasp’ with yellow mark. Click on it and select ‘Update Driver Software.’
select ‘Browse my computer for driver software’. After this browse to the location where you have extracted the USBasp drivers
Click next and ignore the security warning ‘Windows can’t verify the publisher of this driver software’ and select ‘Install this driver software anyway’
Now the drivers are successfully installed & you’ll see this :
alselectro 
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