Laptop was performing as normal. Suddenly when you press the power button to turn on, you hear the fans running at high speed,(nothing on screen) light flashes on power button. powers down, then immediately fans starting running on high again, and the cycle continues.
Steps so far
1. Unplugged battery, left wall plug in. Same result.
2. Left battery in, no wall plug. Same result.
3. Pulled battery plug and wall plug, held down power button for over 20 seconds. Same result.
4. Pulled the memory as well. No change.
5. Disconnected hard drive, no change
Screen never comes on. No beeps at all, even with memory out.
I am beginning to think its either the mobo or the power button. Any advice would be most helpful.
I'd suggest reseating the coin cell battery to see if it will make a difference. Removing the coin-cell battery will resets the BIOS setup program’s settings to default. You could do this by following the steps in link below.
How to Perform a BIOS or CMOS Reset and/or Clear the NVRAM on your Dell System
Inspiron 15 7000 Gaming Service Manual
If reseating coin-cell doesn't get computer to run normally then I suspect this to be an motherboard issue, therefore I'd suggest contacting Dell Technical Support for further assistance in link below.
Contact Information | Dell US
You should also check the system warranty in link below
Warranty & Contracts | Dell US