Hi!

After installation of latest BIOS A09 version for Dell Inspiron 3147 I got some problems with boot.

1. Pause about 10-15 seconds during boot after Dell logo.
2. Start (logon) screen not appear after boot and I see black screen till I do not touch screen.
3. PC does not start from Sleep mode, while Hibernation mode works,

No matter of Windows 8.1 or 10, drives etc. I have tried different installation of drives, settings and Windows 8.1/10.

Solution.

Downgrade to old version of BIOS A07 fixed all above mentioned problems. Why Dell has provide BIOS that made user experience awful? For those who have similar problems after installation of BIOS A09 version - you can download old version of BIOS from Dell downloads page http://downloads.dell.com/published/pages/inspiron-11-3147-laptop.html