E7270 No post , power led and button directly on when power plug in.

Question

My Dell latitude E7270 suddently black off when using with battery. I thought battery flat. But no post or display after power adapter plugged. if adapter unplug , power light and button light is off. No sound no beep at all.

I try many ways as below.

1.Remove any peripheral devices that are connected to the computer.Then unplug the battery and the adaptor, press and hold power button for 10 seconds and then plugin the adaptor and turn on the computer.

2.BIO battery unplug and try with A/C 5 secs. Then plug and on

3.Already checked RAM,SSD and WIFI card are no issue

Mine is power button and led directly on but no post no display when connect adaptor.

Please kindly advise. Hope not motherboard issue!!!

U2CAMEB4ME · Answer

Welcome to the Dell Community @Pegasus_Dell  Hold down the ' D ' key and power-on. Does it cycle trough the self test??? Best regards, U2

Pegasus_Dell · Answer

HI @U2CAMEB4ME  Thank you for advise. After followed your steps, display changes red,blue,yellow,white and black colour cycle flashing once.

Pegasus_Dell · Answer

Hi U2 ,    After followed your steps, display changes red,blue,yellow,white and black colour cycle once. Thanks

Pegasus_Dell · Answer

Hi @U2CAMEB4ME    May I know what should i do for this laptop issue

atlantis2020 · Answer

Hi All, Somebody managed to resolve this? I have the same problem

Pegasus_Dell · Answer

No one

Paijit P · Answer

Not sure if this help. Mine was left without primary battery for a long time and I guess BIOS battery was out as well. So after I insert batter and charge it for an hour. Then pass a loop of display changes red,blue,yellow,... It stop and leave in black. I turn it off and leave it a while, then turn on again. This time, it wait for post ~ 10 sec.

Argordeus · Answer

I had the same issue and fixed it this way:

1) Unplugged battery, BIOS battery, RAMs

2) while not plugged in pushed the power button for 1 minute

3) put memory (RAM) back into the slot

4) plugging power adapter in

4) start the computer (with batteries still unplugged)

Best regards

Ada

Argordeus · Answer

PS: it was on: Latitude 7470 - same should apply for all other models as welllong pushing the power button is important (you can also long push the power button at other steps if needed)

Latitude

E7270 No post , power led and button directly on when power plug in.

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