Hi,
I'm going to give this one last shot before I throw the whole thing in the trash
. I have a Toshiba C55-A5105 that was working fine until a month ago or so. It all of a sudden would start and would shut down at various times. Sometimes it would boot successfully into Windows 10 for a few minutes, sometimes it would occur during the startup, but each time I'd get a different error message and a reboot. Eventually it wouldn't boot at all and I'd just get a black screen.
I know the battery wouldn't hold a charge, so my first assumption was some kind of power surge and a motherboard issue. But I tried various things first to no avail:
1. Tried 3 different hard drives, none successfully
2. Tried 3 different RAM cards
3. Replaced battery and tried different ac adapter
The power light comes on no problem, the DVD drive spins right up, but I only get a black screen (no boot at all), and the HDD light doesn't come on.
So, I decided to replace the motherboard. Bought a new motherboard and processor for the C55-A5105. I carefully replaced the old one and successfully put it back together. Again tried various combinations of RAM and a few different hard drives. Still a blank screen and no HDD light. I tried using an external monitor to see if it was a display issue and no luck. I've tried booting with AC Adapter and with a charged battery as well. Even tried the Shift-F8-Power combination. I've let the laptop sit for hours with the power on, but never does it show a boot screen or any display whatsoever. I even tried pulling out the DVD drive and booted without it, but no change. What else could I possibly try or replace to get this thing running again?
Thanks for the help!
-Rob
