How to install Mega2560 in win8.1

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How to install Mega2560 in win8.1

Post by zhangxueyou » Fri Apr 24, 2015 3:58 pm

Generally,your computer will automatically install Sanguinololu's driver. This topic is mainly for people whose mainboard type is Ramps1.4+Mega2560
Firstly, you have to download "Arduino" . Download link: ...
Then unzip the file.

Connect your printer to computer, you will see a new COM port call "Arduino Mega 2560" in Device Manager:
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Click right button, choose "Update Driver Software":
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Then choose" Browse my computer for driver software":
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The driver is at: arduino-1.0.1-windows\arduino-1.0.1\drivers

If your computer can not intall the driver, and show a window like the picture below, saying "The third party INF does not contain digital signature information", you have to disable the signature.
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How to disable signature?

1. Press "Windows icon+i" on keyboard, click "Change PC settings"
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2. Click "Update and recovery":
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3. Click "Restart now".
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4. Recovery→Restart now→Troubleshoot→Advanced options→Start up settings→Restart
5. Press "F7" or "7" to choose "Disable driver signature enforcement"
6. You can intall the driver in Device Manager now.

When you try to intall the driver, you can see a window as follow, choose "Install this driver software anyway", then your computer will start to install the driver.
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For the safety of your computer, after installing, I suggest you should recover driver signature :
Open "Command Prommpt(Admin)", input "bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS"
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