Finally, DELL'S support has opened a ticket and they will repair it.
in approximately 3 weeks I will not have any more news . Then already I will tell you that it is what happened, for if some day can help someone
I have reinstalled RAM modules and continues the same problem.
Because I have found this page in the manual
Check the battery temperature —
I have a serious problem.
The last day, I close the lid and the computer, theoretically, enters way sleep (or standby.).
On having turned to open the lid, the PC it was in StandBy but it does not wake up
I have tried all the keys, even...
I have unistalled, restarted and now only install automatic. VGA default driver.
If I try to install catalyst, no display error but not change anything.
But I have read this
Mobility Radeon™ Support for Windows Vista
Model: ATI Mobility Radeon 9700
I have executed Windows Updated. Now sound runs fine, but video not. Bad resolution.
Then I have installed this: ATi Catalyst Drivers . http://game.amd.com/us-en/drivers_ca.../win7-32-suite