Can't keep my computer awake

I plugged my 2009 MacBook Pro into my Time Machine external drive after a 3-week trip. Within a few minutes, the computer went to sleep and won't wake up. I have hard rebooted it and got the blue screen, but then it goes right back to sleep. So I tried the PRAM and SM reset and got my desktop pic for a few seconds, but then it goes right back to a black screen. If I hit a key, it sometimes gives a sound, but the sleep light is still glowing. What should I do?

Windows has a program called "Device Manager" which can be accessed through the Control Panels option of the Start Menu
Start
Control Panel -
"Performance and Maintainance" if in Category View or "System" in Classic View
after clicking Performance and Maintainance (in Category view) or opening System (in Classic view) and the Sytem control panel is open
Click the "Hardware" tab, you'll find the "Device Manager" section at the top, click the "Device Manager" button.
The Device Manger will open. This gives a profile af everything bother internal and peripheral that is connected to your computer.
You will see "Universal Serial Bus controllers" at the bottom (unless your system is modified.) That will show you how many USB port you have. Most motherboards have 2-4 high speed ports, if your computer is new all ports should be USB 2.0
NOTE: USB ports on keyboards and most monitors are not USB 2.0, you need to plug the device directly into the machine if possible.
If you have a USB hub that is powered externally (plugs into a powerpoint) that will be USB 2.0 - Hubs that run only of the USB port are not USB 2.0
Hope that information is useful.
Kind Regards,
Peter.
Message was edited by: Peter Miller

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Message was edited by: Grant Bennet-Alder

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Can't keep my computer awake

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