sleep mode

Why is my computer not seeing my USB 3.0 hard drive after waking from sleep?

USB hard drive

Episode 1132

Mark from Chatsworth, CA

Mark bought a Dell Desktop with Windows 8 and downgraded to Windows 7. But his USB 3 hard drive isn't working right when waking from sleep, even after he's re-installed the drivers. He has to reboot the computer to get it to read the hard drive.

Leo says to check out the USB Root Hub. He should make sure that the checkbox "wake from sleep" is enabled (checked). Otherwise it won't wake up.

Should I leave my computer on all day?

Power

Episode 1114

Dan from Tehachapi, CA

Dan is on his computer for about an hour and a half in the morning, then another hour and a half in the evening. Dan is wondering if he should shut down his computer during the day, or leave it on and have it go into sleep mode. Leo says that modern computers handle power pretty well. He can choose in his power saving control panel a variety of different schemes, but the default should be fine. It will go into a low power mode that only uses a few watts, even less than what a light bulb would use. During the day, if he's going to use it off and on, that's what he should do.

Why does my computer freeze when waking up from sleep mode?

Episode 1072

Michael from Garden Grove, CA

Mike's computer freezes up when it's coming out of sleep mode. Leo says that it's a common problem with computers, especially Macs. But even Windows machines have this happen. It's like the computer is "groggy." Sleep puts the computer into a low power mode but still feeds power to the RAM to prevent the user from losing information. It can be problematic, though. Hybernation has it's own similar issues. Leo suspects that since the mouse and keyboard work, that the computer hasn't really crashed. He should do a Google search for the specific computer model.

Why won't my computer go to sleep?

Episode 1055

Mike from Portland, ME

Mike can't get his computer to go into power saving mode. Leo says it could be a bad install and recommends installing from scratch, rather then upgrading. It may also be that Windows Installer doesn't see that his computer supports ACPI. Sometimes the installer gets it wrong and doesn't install the feature. There's not much he can do besides reinstalling Windows. He has to be sure to install the right kernel, and that's the problem because it's automatic.