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  • Posts: 1
  • Registered: ‎04-17-2016
  • Location: US
  • Views: 25
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Yoga 900 issue: the power port cannot read flash drive or charge my phone

2016-04-17, 23:54 PM

Hi all:


This is my first time here and I really need help with this issue.


I know that the power port for yoga 900 is a combination AC power / USB 2.0 port. When I bought it I can successfully use that port to read flash drives and charge my phone.


Recently it cannot support USB function (cannot read flash drive or charge my phone). I am pretty sure it is not a hardware issue becasue this problem occurred after I adjusted some settings to resolve another problem (the laptop will wake up several minutes after I enter sleep mode). It is likely that some changes I made caused this problem, but I really cannot remember exactly what I did :(


I tried many options to fix this problem but none of them work. I tried to use device manager and registry (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR) but it didn't help. It seems that the solutions I found online only apply to a standard USB port, not a combination of power and USB port that my Yoga 900 has.


This problem bothers me a lot and I really appreciate it if anyone can offer any kind of help.


Thank you;

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