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Wobbles wrote: This typically means that the bus you connected it to does not have enough power to power the device. DS4 has an unusually high power requirement, more so that you would expect from a game controller.
Wobbles wrote: Its not random, but it can happen without your knowing, bus drivers, other devices, and other device's drivers can all affect this. Basically if the controller works on one port and not another then we can rule out a driver/software issue and focus more on the hardware aspect of it. Try re-arranging your USB devices as buses are shared among several ports so if you move power hungry devices off of the affected bug the controller may start working again.
Also Windows has settings for USB bus power buried in it that may have gotten switched during a Windows or driver update.
Also check for loose ground on both the port and the MoBo header as a loose ground can also restrict power.