## At the Dell logo, press the F12 key several times to enter the One-time Boot Menu.
## Use the arrow keys to select Diagnostics and press Enter.
## Follow the on-screen instructions, and respond appropriately to complete the diagnostics.
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# Check out DELL's web site:
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# [link|https://www.dell.com/support/search/en-nz#q=Dell%20Latitude%20E7440&sort=relevancy&f:iuxType=[Drivers%20%26%20Downloads]&f:langFacet=[en]|Dell Latitude E7440 Support|new_window=true]
Nevertheless have you tried:
# Cleaning dust from the air vents, fan, etc.?
# Updating BIOS and drivers?
# Updating Windows?
# Running the DELL Diagnostic?
## Restart the computer.
## At the Dell logo, press the F12 key several times to enter the One-time Boot Menu.
## Use the arrow keys to select Diagnostics and press Enter.
## Follow the on-screen instructions, and respond appropriately to complete the diagnostics.