Toshiba Satellite L850 Bios Update

[Fairy Dawdy]

Ihad a Similar problem with My Toshiba Satellite L50-B where every time I tried booting from USB it wouldn't I searched numerous website all saying the same thing in the end I gave up and started testing BIOS settings Myself and found that if I changed the USB 3.0 setting to disable so it boots the laptop into thinking its using USB ports in 2.0 mode I instantly Am able to boot Windows setup or anything similar with no problems at all hope this may help some of You. :)

From my own tests with toshiba click mini, you'll be able to boot vfat usb key with a well formated efi boot directory and file (/efi in your USB key). Bios even in 5.10 release does not support legacy boot.

Windows 8.1 32 bits usb key build from Windows 8.1 is able to boot on click mini (ntfs filesystem) while 64 bits release of Windows 8.1 usb key build from Windows 8.1 64 bits does not boot on click mini. I suspect, as discuss on toshiba eu forum, toshiba click mini bios to boot using 32 bits efi boot sheme on efi/boot/bootia32.efi.

Try boot with a gparted usb key : get the files from efi/boot (include a grub.cfg file) and use this on new USB key you create, you'll be successfull to boot linux modifying grub.cfg. Try the Manjaro (ArchLinux) distribution, this distribution as the best hardware support at that time.

Fedlet works out of the box (although super unstable because the window manager is to heavy). What I did was install xubuntu while stealing someone else's efi encryption stuff. Then I just did some grub hacking and it worked (I think I ended up comparing what fedlet was doing vs the default xubuntu disk). Once I booted I installed xubuntu and then I had to do the same procedure for the installed OS.

I tried everything add infinitum and eventualy took the back off machine unplugged cmos battery plugged back in, put computer back together and hey presto no problem.there are loads of instructibles on youtube for the process ,not particularly easy.

Thank you so much!!! I'm going to pass this on to everyone I know. I don't know what caused it to do this in the first place. I'm just happy it worked and I didn't spend hours taking it apart and fixing it

Hook up an external monitor to determine if you have a motherboard or LCD problem. If the external monitor works, the trouble is with the display or its cables. You should also confirm that your memory is properly installed, and you may want to replace your BIOS battery. I have included a link to disassembly instructions for your unit. Good luck.

The "black screen of death" is usually very easy to repair on a laptop. First, turn your computer off by pressing and holding down the start button. Next, unplug the computer and remove the battery. Press and hold down the start button for about 60 seconds. Release the button and plug in the computer. Press the start button and the display should return. Replace the battery. If this does not work, try it again up to four times. Getting no results usually indicates a bad motherboard. I hope this helps.

For those of you with a laptop that does not have a removable battery, this might help. Hold down the power button to shut off the computer, but DON'T TAKE YOUR FINGER OFF THE POWER BUTTON. Hold it there for about 60 seconds more, and then remove your finger. Then, press the power button again to turn the computer on. I did this, and it worked for me :)

I did as above old turkey o3, worked first time, I had been working on my daughters toshiba for a few hours went away , came back and blank screen. Even after forcing shut down still nothing. I thought a trip to the computer shop was in order!! But thought I'd google the problem and was directed to here and the rest is history back up and running so so easy thank you old turkey03

I got my laptop back 3rd time round. 1. was screen 2nd was motherboard 3rd was Harddrive. After putting everything back into Toshiba Laptop everything seemed fine until I switched it off. Later when restarting keyboard lit up but screen black. I tried all the methods above until FN F5 idea and it came to life. 1 thing is for certain...Toshiba Satellite is a dud or I was unlucky to get that 1 oddball that just gives problems. mustve been the laptop that was last job on a Friday knockoff. cheers K49 AMBO.

nothing worked for me. Only time i get it to work is to remove heatsink replace paste and heat with hair drier before i put it back together. Works for a while then i turn it off and when i come back t turn it on it is blank screen but making noise as if working.

Each owner has said the same thing: over the past few months, every once in a while the screen stayed black during boot-up, but a restart or something similar like removing the battery, letting it sit overnight, or power-cycling made it boot correctly. Eventually nothing would help and they brought their laptops in for repair.

On the first machine I had to troubleshoot for quite a while before determining the issue, including everything mentioned here in this thread, until finally deciding to replace the mobo over re-soldering the GPU (which I incorrectly assumed was my only option). On the second unit I reflowed using a hairdryer, followed by my kitchen oven. Big job. Didn't want to have to do that with this machine, so I'm borrowing a heat gun tomorrow and using this procedure found on YouTube:

This is a known issue with the laptops in this line and while one of the other suggestions might work and solve your specific problem, be on the watch for the graphics to eventually die due to dust and/or heat buildup in the future. It's HIGHLY recommended to use a cooling pad under these systems (some of the Toshiba User Manuals even go so far as to tell you that you NEED to use one rather than just SUGGEST it.) and to periodically tear-down and clean out the inside around the heatsink, fan, etc. You'll find the dustier or dirtier your normal environment, the more often you'll need to do it---at least twice per year is a good start, especially if you own pets that shed.

If you would like a copy of my t-shoot list to rule out all the other possible problems that can cause the black screen of doom, message me and I'll be glad to share it. Otherwise, assume your machine needs the gpu reflowed and don't trash it!

IMO, Toshibas are good machines. I still have my original with Windows 95 on it! I own several models and have found, with the proper maintenance, that they'll last well past 10 years. (Believe it or not, I've found that Dells and Acers are the next best performers among abusive users. LOL.) Every manufacturer has weaknesses: none are perfect. Don't expect to not have issues with electronics because you'll always end up disappointed. Heat, dust and mishandling are the three biggest killers.

Exactly, The same thing happening. The Toshiba Skullcandy are mostly affected. The GPU is dyeing after a certain time. I have seen many in these days. Everything else will work but you wont get a display. And also others stated in previous comments there is no BIOS/CMOS battery in these models, at least the Satellite L50-C models. It is difficult sometimes to determine what is causing the issue. Believe me and Mary as describing in the post an end user can not do much more in this situation. Thanks for your post Mary much appreciated the time to point the common fault in these machines.

Something funny - my own very very dim screen problem problem turned out to be Toshiba's eco setting which set brightness to 1. I had accidentally pressed a button that switches it on. The display is so dim it looks off, unless you shine a flashlight on it. Connecting to external display and undoing the eco setting solved it.

The problem is much more simple in my case after long time boot with black screen in windows 10 toshiba satellite: problem is with graphic card driver, usually after install windows graphic card driver is allready there, in my case amd radeon hd, but windows ask you on install to dual monitors graphic card, all of us maybe check yes. In Device Manager I disabled in Display Adapters this Dual Monitors adapter, remaining only simple amd driver and display boot on restart very fast. Check your graphic device!

this one had a brand new battery in it when i got it. believe it was the ribbon plug from the board to the screen that was bad, but i didn't intend to waste any more money or time on it so a scrapped it for parts . so the case is now closed. so no need to send any further answeres/theories etc. It iis in the scrap bin at our local Good will now .

Thanks for your help! I did exactly as you mentioned - Push simultaneously F8-Shift-Power On - and IT WORKS! (My computer has Windows 10 Home installed). Following is the info of my laptop I bought in 2008.

(I went to Toshiba support website and tried what it suggests in Trouble shooting. It didn't solve the "Black screen" problem. Then I searched on the Internet and found Tim's solution. I tried what Tim suggested. And it works! Once more MANY THANKS TO TIM!

but in my case, i've NEVER been using the battery because it's been dead for ages now, also already disconnected from the laptop and kept in a box somewhere ... so, that means i'm using the PSU all the time anyway!

the BIOS pw trick would also come in handy but the problem with MY Toshiba laptop is that i can't even get to the BIOS anymore: the laptop starts but before you even know it, the HD doesn't respond AT ALL and no F-keys do ANYTHING and all that happens is just a very noisy fan working!

the problem with my laptop started mostly after i added more RAM to it: used to have 4GB but has 8GB now ... (that puts so much pressure on the PSU which not only causes trouble when starting the laptop, it may as well damage certain components! (have had a similar issue with another laptop in the past as well ...)

The BIOS password would only work if the problem is your battery not holding a charge well, or maybe at all (but being installed). So in other words it's a way to get passed any timeouts in the BIOS if for whatever reason the computer did not detect the power cord for whatever reason.

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