I have an older Dell Optiplex 960 Windows 7 system that has been running fine for several years. Lately all Usb inputs have randomly stopped working (keyboard and mouse not recognized). I have run AV and SFC and MWB with nothing found. It does not matter which program is running (even in the middle of Solitaire) when problem occurs. Restarting PC does not fix the problem. Cannot enter BIOS SETUP MODE. However unplugging pc from wall power and replugging fixes problem for several days. Where should I look first to solve this problem,, or what actually gets depowered when unplugging a PC that is in the OFF state.
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USB inputs fail
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Re: USB inputs fail
also check your device manager for code 10's on the USB controllerCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM me
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Re: USB inputs fail
Originally posted by stj View Postcheck the inside of the power supply for bulging or leaked capacitors.
i have seen this when the 5v standby voltage goes to shit.
dont ignore it - it can eventually damage the motherboard.
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