Laptop Dell Studio 1555 w / Vista does not wake from sleep when the lid is open.

I have a laptop Dell Studio 1555 with Vista Premium 64-bit. Until last night, the laptop would run mode standby when I closed the lid and woke up when I opened the cover later. Yesterday I was downloading photos from a Canon camera via USB. I close the lid when I did. When I went to open the cover later the laptop screen remained in black and white. The power button is lit, but the only way I can get to meet is to hold the power button until it turns off completely, and then restart the laptop. A difference when the lid is closed, I think the power button will blink and turn off slowly while he was really in sleep. He remains on all the time now when the lid is closed. I tried to go into power management and put the laptop from sliding when the lid is closed, but has not made a difference.

Run the system restore and choose a restore point created just before the problem occurred. Steve Winograd, MS - MVP (Windows desktop experience)

Tags: Windows

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