why orange light flashes on my Delllap top latitude D630

Solution
If it is an aftermarket charger, it may not be functioning correctly, or the laptop doesn't register it correctly. It is hit or miss with those. If it is working correctly, other than the light, I can't say not to use it, but you may want to consider an OEM one.

Now it is also possible that the battery is having issues, and it is the reason for the blinking. Meaning the battery isn't charging correctly, or not fully holding a charge and needs replacing.
If it is an aftermarket charger, it may not be functioning correctly, or the laptop doesn't register it correctly. It is hit or miss with those. If it is working correctly, other than the light, I can't say not to use it, but you may want to consider an OEM one.

Now it is also possible that the battery is having issues, and it is the reason for the blinking. Meaning the battery isn't charging correctly, or not fully holding a charge and needs replacing.
 
Solution