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Old 06-04-2011, 02:43 AM   #1
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Default unexpected reboots on change of resolution

hi everybody, I'm very new here.
I have a big problem with my Dell Inspiron 6400, almost 4 years old.
form the begining:

1- When i turn on the laptop, the screen is not coming up. I have to wait at least 10 minutes till it get warm enough, them with the first reset it will come up easily.
2- if I leave it on sleep mode, so I don't need to wait that 10 minutes, it will wake up immediately, but as soon as i open a new window or with a first change on screen mode, monitor will get dark and system will die. so I have to restart it.
3- I checked everything, reinstall windows (vist), reinstall drivers and ... but still strogeling with this matter.

Please help me.
Many thanks
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