XPS 18 1820 only POST - Power 7 white LED flashes

Hello

I restarted my XPS 18 after only an update of Windows 10 (I think that was the case the graphics drivers) and now it does not start.

No logo, no POST... nada.  Press and hold the power button for about 10 seconds, I can here a subtle click and whir, I think it's the HD fan and processor die.  Then hit power button once again, I see a code flashing on the power light: 7 flashes white, pause, repeat.

I can't after that.  Connect a USB keyboard and pressing F12 do nothing.

No difference between supply the stand and plug the power cord directly.

Any suggestion is appreciated.

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Tags: Dell Desktop

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