To elaborate, simply connecting SMPS to power supply does nothing to the PC or the miner. During this time, I connect the miner to the PC via USB and the miner's fan spins and no reboot happens on the PC. But when I short the SMPS which starts the PSU (the fan inside SMPS spins), the PC shuts down.
Now I don't want to plug it into my laptop anymore. Scary. What if it blows up my whole system. I'm waiting for TP-Link MR3020 (which will take a week or so, I guess) to arrive plus a multimeter on its way.