My two year-old Dell Latitude e5440 laptop is displaying erratic start-up behavior when restarting from shut down or from hibernation. When the laptop is disconnected from AC power and all accessory devices and I press the power button, the caps lock key and the battery light on the front light up, but the screen does not turn on. USB devices connected at this point do not charge. If I press the power button again, the fan picks up speed suddenly and the laptop powers down. I can cycle the power like this over and over again and so far my laptop always turns on eventually, though it is constantly taking more attempts to see this behavior. Is there a way I can get my laptop to turn on reliably?
Solution
webworkings
Titan
- Apr 6, 2016
- 25,136
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It may not be that it isn't turning on, but that just the display isn't. To be sure, try the following...
1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.
NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.
If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.
If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.
1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.
NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.
If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.
If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.
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