Black screen on startup with Toshiba Laptop

[Skull_C0wboy]

I'm trying to repair a Toshiba Satellite C50D-B-11N for a friend.

When he gave it to me, it would power up, the fans would run and the HDD would spin, but nothing would display on the screen. Not even the Toshiba splash screen.

I just installed a new motherboard, as I figured his GPU must have gone. After I first power it on, I get the splash screen, then BIOS, but when trying to boot up windows it keeps saying "Exiting PXE ROM", even after setting the HDD as the first boot device.

After a few restarts, it takes me through an automated repair process, where it says it is rebuilding the boot block. After a restart, I'm back to square one, with no splash screen or any display at all.

Any ideas? I've run through many of the troubleshooting forums and have had no luck.

 

[zer0c00l587]

See following link:

http/www.tomshardware.com/answers/id-1817818/exiting-pxe-rom.html

 

[Skull_C0wboy]

See following link:

http/www.tomshardware.com/answers/id-1817818/exiting-pxe-rom.html

Thanks, I'll keep that in mind if I ever get the display back. But since then, I'm not even able to get to the BIOS or even see the splash screen. I had a display about 20 minutes before I posted, then it tried to repair the boot log, and now I get no display at all.

 

[zer0c00l587]

Remove battery and charger, press and hold the power button for 30 seconds, the reattach battery and charger to see if it boots normally, or at least allows entry into bios.

 

[Skull_C0wboy]

Remove battery and charger, press and hold the power button for 30 seconds, the reattach battery and charger to see if it boots normally, or at least allows entry into bios.

No luck with this. I'd tried it for longer periods of time too, but no results yet.

 

[zer0c00l587]

I think you should boot up with a windows disc, try repairing windows installation in recovery console, it gives options to fix startup issues, system restore or command prompt use. New motherboard sometimes forces complete reinstall of windows.

 

[Skull_C0wboy]

I think you should boot up with a windows disc, try repairing windows installation in recovery console, it gives options to fix startup issues, system restore or command prompt use. New motherboard sometimes forces complete reinstall of windows.

Thanks for your replies. I'll give that a try when I can. It doesn't have a disc drive, but I should be able to source an external drive to try that. Hopefully I'll be able to get a display, despite the splash screen not currently coming up.

 

[zer0c00l587]

Bootable usb to install is possible if the bios allows it, my fujitsu-siemens laptop from 2005 allows windows installation via usb.

 

[Skull_C0wboy]

Bootable usb to install is possible if the bios allows it, my fujitsu-siemens laptop from 2005 allows windows installation via usb.

I was able to install the disc drive from my laptop and put in the windows disc. I can hear the disc spinning up but still nothing displayed on the screen.

I might be way off, but I feel as though the BIOS must have been corrupted or wiped, as it displayed fine after I installed the new MB, but then stopped displaying after trying to repair the boot block.

 

[jarotech]

Hi, with the new motherboard, can you go into the BIOS?

 

[Skull_C0wboy]

Hi, with the new motherboard, can you go into the BIOS?

Nope. I get no slash screen. I try the keys to take me into BIOS, but can't tell if it's responding.

 

[jarotech]

Did you try an external monitor?

 

[Skull_C0wboy]

Did you try an external monitor?

I had already tried this through the HDMI port and had no luck. I've been trying to get hold of a VGA cable before responding. Still nothing on an external monitor.

 

[HarukaNanase]

Hold a bright light against it and even if the shows up faintly, you can determine if it has to have a new backlight. However, if it isn't showing up on an external monitor, then you'll need to ask an expert. One of your hard drives might be screwed up. Otherwise, I can't help.