A family member has a Dell Latitude E7440 we bought used from Ebay about 6 months ago. It was fine until about a week ago, when it stopped booting up (battery or power supply plugged in). By not booting, I mean nothing: nothing at all on the screen, fan audible for a couple seconds, then dies down.
I took off the bottom cover and noticed that when I pushed the power button, the fan turns on for a few seconds, then dies. Hit the power button again and the same thing. I pulled the hard drive and battery, unplugged the power supply and held the power button on for ~30 seconds to drain the capacitors (so I've read): no change. I've reseated the RAM: no change. I've disconnected and reconnected the CMOS battery: no change.
Sounds like the motherboard and/or CPU fried? Any other troubleshooting that can be done before I try to find a new motherboard?
I took off the bottom cover and noticed that when I pushed the power button, the fan turns on for a few seconds, then dies. Hit the power button again and the same thing. I pulled the hard drive and battery, unplugged the power supply and held the power button on for ~30 seconds to drain the capacitors (so I've read): no change. I've reseated the RAM: no change. I've disconnected and reconnected the CMOS battery: no change.
Sounds like the motherboard and/or CPU fried? Any other troubleshooting that can be done before I try to find a new motherboard?