Question about Zeiss Humphrey 740 Visual Field Analyzer

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How can I fix my screen ,will not show anything on the field analyzer 740i? Help please

Blank screen when machine boots up

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Did you move the brighness control. It is on the right side of the equipment. If not, it could be the video board inside of the equipment

Posted on Sep 10, 2014

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Posted on Jan 02, 2017

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My itellipad only shows a blank screen and won't allow me to do anything. What's wrong with it and how do I fix it?


Looks like your OS is stuck in a loop and will need a hard boot. you can hard boot the computer. but this issue is usually caused due to corrupt services, i recommend getting a technician.

call 1-877-805-1027 for expert help

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Try pressing F8 just before it tries to boot. If you can get to safe mode you may be able to recover the damaged Boot Manager Files.

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How do i unlock my acer laptop? i have forgotan my password


Reset Acer windows password, you should tell us what the Os do you use first.

On XP you can try this:
Boot computer and press Ctrl+Alt+Delete twice when you See Windows welcome screen / login screen. It'll show classic login box. Now type "Administrator" (without quotes) in username field and leave password field blank, press Enter and you should be able to login Windows.
Now you can reset your account password from "Control Panel -> User Accounts".
On Win 7 or Vista:
Ctrl+Alt+Delete won't work, you have to use some windows password recovery software. I recommend Windows Password Reset

Resourece: http://www.windowspasswordreset.net

Jul 16, 2012 | Acer Computers & Internet

1 Answer

E640 REBOOT


Hi John,

I see you mentioned you update IE9 then you now get a blank screen...

If I may ask the blank screen showed up after the update or did it show up after restarting the computer?

If your getting a Blank screen when you boot into windows after the IE9 update, try rebooting then boot into Safemode.

Restart you computer then as soon as you see the Boot screen of you computer keep on Tapping f8 to get a list select safemode, then once it boots into safemode windows will load up in safemode on the issue and you can navigate arround to fix things that went wrong.

click on the Start Button on the lower left of the task bar then, click on Programs, select accessories then select system tools, look for system restore then select the option select a different restore point, on the window you may see a list of restore points hoping your system restore was turned on in the very beginning, once you have selected a restore point keep on clicking next then a warning will show just click next again then it will restart your computer.

System restore allows you to restore to a date where you had windows working fine without any problems so if you can get a restore point before updating IE9 then it is possible that you may be able to fix you windows back the way it was.

I hope that this will help,

michaelvincentc

Dec 22, 2011 | E-Machines W Computers & Internet

1 Answer

Whats wrong with my apple computer has a blank white screen with a ? and it also had a blue screen the other day not working please help


A question mark on the boot screen is an indication that the machine can't find your boot drive. Usually this is trivially fixed by resetting the PRAM (holding down command-option-P-R after turning on the machine with the power button, until you hear the chime three times).
However, taken in conjunction with your other symptom, I would suspect a failing drive or a failing SATA channel (less probable). Does it boot from the original DVD without these symptoms? After booting from the DVD, are there any indications from the tools that the hard drive may not be showing as present, or may show intermittently?
If you have a good backup (Time Machine or otherwise), I would erase and reformat the disk with "write zeroes to all records one time," then reload the backup, and see if that fixes the problem. If not, you will need to replace the drive, and reload the backup (hope you have one) onto the new drive.

Oct 29, 2010 | Apple M9248LLA iMac G5 1.6GHz Desktop...

1 Answer

PS3 only goes to game screen it locks up doing anything else


Does This Go with The Friends List Aswell bcuz if it duz i will reset my box and see if that duz anythin

Mar 29, 2009 | Sony Playstation 3 (PS3) Console

1 Answer

Blank screen


Hi,

Are you not able to boot it,

Is the Laptop showing black screen just from start or a Blank Desktop?

Also let me know about the Operating system and since when you purchase it.

Please clarify me so I can suggest you accordingly.


Regards
ELLIN

Sep 14, 2008 | Computers & Internet

2 Answers

Blnk screen


my mp3 player is just showing a blank white screen. it wont turn on, wont turn off, my computer wont recognize it, nothing. whats going on and how can i fix it? thanx. anything will help at this point.
thanks dw dreamingmusic06@yahoo.com

Jun 01, 2008 | Philips GoGear HDD6330 MP3 Player

1 Answer

Turn power on..PC screen black,nothing,will not boot up


Hello,

Your first approach would be to attempt to reset the laptop by removing external power and the battery and leaving those out for a few minutes. Then, re-install the battery and add external power. Try rebooting again. It may be okay.

Since you state the machine appears not to be booting even though the screen is blank it doesn't make sense to advise you to connect an external monitor to the blue vga out plug, but you can still try that.

When all this fails you can take your machine into a repair ship where they can remove the hard drive and analyze it on another machine and see if you haven't suffered a fatal disc error that can actually recover your disc. They would also tell you if the main board has failed and give you options.

Keep this in mind if it comes to the last paragraph, the cost of repairing your older laptop may be close to the cost of a newer laptop. It is your decision to make. Don't let anyone force you into an expensive repair when you may be able to get into another decent machine, other than Toshiba of course, made by Acer.

Hope this has fixed ya.
Worldvet

May 16, 2008 | Toshiba Satellite M105-S3041Notebook

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