Deep Sleep mode for computer hardware
Ever heard of deep sleep mode for computer hardware? Have you faced a situation where a piece of computer hardware just vanished from list of devices in Windows device manager list?
Most common of this issue is to do with the Network controller on Windows 7 but it can affect any hardware that supports a sleep/deep sleep mode to conserve power when not in use. This is all good but the problem starts when such a component fails to wake-up from the deep sleep and Windows then believes that the hardware actually doesn’t exist!
In case of Realtek’s Netword Adapter/Controller driver installation, following message is displayed:
“The RealTek Network Adapter/Controller was not found. If Deep Sleep Mode enabled Please Plug the Cable.
How to fix this?
There are few things that you can try. In no particular order:
- Shut down the PC and then take the power cable out of the socket. Remember shutting down the PC is not enough, you must completely switch off the power supply. Leave the machine like this for about 10 minutes or more. Power on the machine and hopefully the hardware will wake up!!
- If the above doesn’t work, reset the motherboard by removing the RAM modules. Leave them out for some time and put them back in. Power up the machine. If this doesn’t work, leave the RAM out longer.
How to disable deep sleep mode on Windows 7 (for say the Network Adapter)
- Go to Control Panel -> System and Security -> Device Manager
- Expand Network Adapters -> Properties -> Power Management Tab -> Uncheck “Allow the computer to turn off this device to save power”
Hope this helps!
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