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wiki:hardware:troubleshooting:psu [2022/09/20 21:12]
claire created
wiki:hardware:troubleshooting:psu [2022/09/20 21:17] (current)
claire
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 <adm abstract Old blog post> <adm abstract Old blog post>
 This article was originally published on October 29, 2008 This article was originally published on October 29, 2008
 +</​adm>​
 +
 +<adm tip Why this works>
 +By unplugging the machine in question and waiting ten minutes, the capacitors in the machine'​s power supply have enough time to drain any residual charge, which may be interfering with the normal function of the machine'​s components (both the motherboard and other internal components).
 +
 +Pressing the power button before reconnecting the power cable //can//, depending on the hardware, discharge the power supply'​s capacitors, but this isn't a given.
 </​adm>​ </​adm>​
  
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 We removed all the USB host items from the Device Manager and reinstalled them, to no avail. Then I tried disabling the USB enhanced controller item (this is generally what lets Windows know that a USB controller is capable of USB 2.0). This worked, but kept his devices from working at USB 2.0 speeds. We even reinstalling Windows completely and still had the same problem. We removed all the USB host items from the Device Manager and reinstalled them, to no avail. Then I tried disabling the USB enhanced controller item (this is generally what lets Windows know that a USB controller is capable of USB 2.0). This worked, but kept his devices from working at USB 2.0 speeds. We even reinstalling Windows completely and still had the same problem.
  
-I started Googling around and found [[http://​skeptacles.blogspot.com/​2006/​10/​xp-sis-pci-to-usb-enhanced-host.html|this article]](([[https://​archive.ph/​MiSrc]])) regarding my exact problem – the SiS PCI to USB Enhanced Host Controller mysteriously quit working, and took all USB 2.0 devices down with it. This blogger’s solution was to shutdown and unplug the computer, wait for about half an hour, hold in the power button for a minute, and then restart the machine.+I started Googling around and found [[http://​skeptacles.blogspot.com/​2006/​10/​xp-sis-pci-to-usb-enhanced-host.html|this article]](([[https://​archive.ph/​MiSrc]])) regarding my exact problem – the ''​SiS PCI to USB Enhanced Host Controller'' ​mysteriously quit working, and took all USB 2.0 devices down with it. This blogger’s solution was to shutdown and unplug the computer, wait for about half an hour, hold in the power button for a minute, and then restart the machine.
  
 And, like magic…it worked. And, like magic…it worked.