Motor DC 12 Volts problem when controlling using PWM from Arduino

BramLabs said:

I didn't use arduino as my 5 volt power supply sir. I used external power supply like on the schematic at my first post.
And BTW , when i'm directly connecting to the 5 Volt supply, i'm connecting with 2 options. First, i'm experimenting with using arduino as a power supply, and the second i'm experimenting using external power supply. The first and the second works greatly. I know arduino can maintain current up to, yeah, just say 40 mA. But it's work. I've tried it.
So i think the problem isn't because of the arduino.
Thank you sir btw for your help ^^

This is the video when i'm connecting my fan using 5 Volt supply arduino. And it's work great without any STARTING problem.

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