That do something on short or no power systems. Ready?
1. https://www.google.com/search?q=Dell+hold+down+the+d+key&
2. The old remove the battery and charger reset the bios settings method. VARIES with models but for years I've brought back a few machines by removing the battery (big one) and unplugging the charger (which we do first.) Now with those out I hold the power button for 60 seconds. Release, slip in the big battery and apply power. Test and see what happens.
Hello
I have laptop dell inspiron 15R SE (7520-4729)
I need key buttons sequenction which perform restore factory bios without no power (on disabled laptop).
Currently laptop, after pressing power button, running for 1-2 seconds and turning off, does not even show up "post" (dell logo screen). It's my fault, i did too much changes in bios settings.
I already earlier used this key sequenction, to do that, but i forgot, so now i searching that again, but i can't find.
It was something like a:
"press tab button, left arrow, left arrow, right arrow, enter, right arrow etc.."
It's looking funny, but it works (I already did it early)
Please help me, thanks

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