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Windows 7: Sound, Video and game Controllers in device manager is missing,

30 Jul 2014   #1

win 7 home premium 64bit
Sound, Video and game Controllers in device manager is missing,

no sound,(there is a white x surrounded by red color next to volume icon)

troubleshooting results in message reading "hardware changes might not have been detected".

Sound, Video and game Controllers in device manager is also missing,
please help ! Model L655D-S5116 (toshiba satellite)
I tried reinstalling the audio driver(Conexant), tried clean start-up and dvd C drive recovery but doesn't help.
if I shut down computer for more than 5 hours, then turn back on the problems usually goes away............
but if I restart the computer, the problem will come back......

My System SpecsSystem Spec
31 Jul 2014   #2

windows 7 home 64bit

Hi Welcome to Seven Forums ... Please run a System Scan and Post back the results .. The Link below will help you achieve this ...

SFC /SCANNOW Command - System File Checker

What Antivirus programs do you use ? ... Or Registry Cleaners / System Utilities Software ?
My System SpecsSystem Spec

 Sound, Video and game Controllers in device manager is missing,

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