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My tashiba L755 has a black screen after turning on the power button plus has a pass word don't know the password I think it's a bios issue not sure how to fix

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If it is the hdd password, purchase a new hdd.

Posted on Apr 12, 2014

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1 Answer

I was wondering how do I reset my motherboard on Toshiba Satellite l755 thank you


I think what you are after is a reset of the laptop to factory default condition.

If that is the case follow instructions on this link. FAQ How do run System Recovery Support Toshiba Computers Laptops...

Otherwise if you want to reset bios password then go to the instructions at this site. Toshiba Satellite P755 Bios Password Removal

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Black screen after updateing the bios


If you did a backup before you upgraded the graphics driver then I would restore this. I would then do upgrades one step at a time with a full backup between upgrades.

If you don't have a backup then I would take the opportunity to rebuild the system and take backups at various stages.

By doing the backups regularly you wont get caught out by so called upgrades which actually do the opposite.


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Black screen after updating the bios


Thank you for the detailed explanation, it's really helpful in finding a solution.

It's a little bit of a tricky situation. If the BIOS didn't give a confirmation that was updated successfully, it is possible that it failed.

There are two things that you can try:

1. In case only part of the bios updated successfully, it is possible to still being able to read a BIOS update from USB.

2. Just in case, plug it in an external monitor and try to turn it on.

If it turns out the BIOS is indeed bricked, then you will need to bring it to Toshiba Customer Service.

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Need to reset bios password on satellite L755-s244 toshiba


Remove the battery. Remove the power adapter. Remove the RAM. Underneath the RAM is a jumper JPW. With a metallic instrument short the lands apply the power adapter and press the power button after 1Second remove the jumper and remove the power adapter. Replace the RAM and then power up the laptop.

Dec 20, 2013 | Computers & Internet

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System=intel Celeron D W3507 When I turn it on it goes straight to a black screen asking for a system password I've tried every password I know but I can't get in please help


If you don't see windows, then it's a BIOS password, and you would know if you set one. Unplug it and hit the power button, then touch metal, and pull the battery out for ten minutes. After you put the battery back in the motherboard, and plug it in you need to hit delete at start and enter the BIOS to set the time and date, then move over to exit and save changes.

Mar 30, 2013 | Computers & Internet

1 Answer

I need a power on password or to bypass this..i have a compaq evo n600c laptop,please help me


Press F2 button (repeatedly and fast) right after pressing power on. That will take you into the BIOS setup. BE CAREFUL IN THERE. Don't make changes unless you absolutely know what they will do. Read the screen (top or bottom) for instructions on button navigation through menus (the mouse/trackpad will not work in BIOS mode). Then look for the ''Password'' screen and navigate to that screen selection. If found, change from ''enable'' to ''disable.'' If it requires the password to make that change, then you are stuck (sorry).

If this problem _is_ in your BIOS, it means either you bought this computer used and whoever sold it to you owes you either a password or a refund. Or, if this has been your computer for some time, then someone played a nasty trick on you by enabling this feature inside the BIOS when you were not around. If so, find said person and wring neck for password.

:-)

Ps... You can also try a ''Password Bypass Boot Disc'' either on sale at ebay, or various web sites. Or download the ISO of such a disc online and burn it to CD yourself. (Don't pay more than $10 for such a pre-made disc). Note that such discs will not solve the problem if it is in fact inside the BIOS (which I really think yours is). These discs are for the ''Windows User Account'' password. And again, your screen looks very much like a BIOS password to me.

Good luck.

-Gregg

Oct 08, 2012 | Computers & Internet

1 Answer

I have an ibm think pad t40 and after turning on it shows a lock symbol what can i do to get passed that


Hi stbnwyearjob..

Your T-40 computer is waiting for a password.
That screen with the lock symbol is the startup password screen.
You will enable or disable this password in the BIOS of the computer.
You will need to know what that password is to disable it.
If you do not know the password then:
You can also try to remove the cmos battery for a few minutes and then replace it that may clear the bios password.
Please take time to rate me

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1 Answer

I am trying to change my CMOS battery in myAcer Extensa 4420. I am unable to locate it partly because I don't know where to look and because I don't know what it may look like. I think it is a...


you'll find a lot of laptops have inaccessible bios batteries. Yes the cmos battery does look like a nickel sized one. I think the battery is located under the largest cover plate on the base of the laptop in this case, so it may not be too difficult getting to it.

A word of caution, this laptop came with a power on password, which will want inputting if you change the battery ( called a bios pass), if you do not have this, you might find you are locked out of the laptop OS)

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How do I unlock hp 530 laptop?


Inside of the computer you will see a small yellow(likely) button. Press and hold for about 5-7 seconds and then try, This is the CMOS reset button. If that does not work you can always remove the battery for a few seconds and that will work. This will also reset any bios settings you have saved to default.

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