Inspiron 17r-5720 apparently went from working to this: flashes the dell circle, then nothing. left it over 12 hrs, still no error message, nothing.
Can get into bios fine. diagnostics all pass. On rare occasion, the bios progress bar will appear, but stays empty.
F12 does open the boot menu, uefi boot is blank, other opts: setup, change boot mode settings, diag.
When am on UEFI, doing add a boot option = warning! file system not found ! The hdd has been connected to another pc, it has files, and a windows dir.
Have tried sata mode in ata & ahci. have tried secure boot on & off. have tried boot list as uefi and legacy.
Have pulled both the hdd and the dvd drive out of unit, still nothing happens after the very brief dell logo.
Have tried several bootable dvds - nothing happens.
Pulling the ram out does make it beep. Nothing else makes a difference!
The bios is A12. Put A16 on a flash drive & booted w/ drive in left front usb port, nothing happened.
So - what next?