can "disappear" after the computer wakes from sleep. Disabling "PCI Express Link State Power Management" in Windows Power Options can fix this.
If your download consists of an executable file ( .exe ), simply right-click it, select , and follow the wizard prompts. However, if you downloaded a bare driver package containing .inf , .sys , and .cat files, follow the manual installation method below. Manual Installation Method: asmedia asm1083 driver windows 7
In the rare case Windows doesn't automatically install a driver, here is a reliable procedure: can "disappear" after the computer wakes from sleep