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Repair information and troubleshooting for the Dell Latitude E7240. This is a 12.5 inch computer with a 4th generation Intel processor, introduced in 2014.

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No display and power and hard drive lights are blinkings.

I open the laptop to change the hard drive, but i didnt change anything as the hard i have was a different one. When i turn it back on, only the power light and the hard drive light was blinking with no display.

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Did you disconnected the battery before check anything inside?

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Yes, i disconnected the battery before checking.

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seremaiakaravaki not uncommon to have this happen without a HDD. Double check your work and get a new HDD and OS and re-evaluate.

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seremaiakaravaki will be eternally grateful.
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