Question about Toshiba Satellite A105 Notebook

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Toshiba Satellite A105-s101 video problems

Video became eratic several days ago then finally failed. Would not show video on laptop screen or on stand-alone monitor. Took battery out and it powered up (ac) with video on laptop screen. Got blue screen message "unmountable_boot_volume". Now running window repair console. Why is there no video with the battery installed and ac pugged in?

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Unmountable boot volume means most likely the hard drive has failed.

Posted on Dec 21, 2008

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Display divided into 3 parts


LCD screen cracked, and Three even strips going across? Doubtful. Haven't seen it but I always have my mind open.

Three strips that are irregularly shaped? Look like glass that has cracked?
'Jagged edges'?

LCD screen is broken.

Three even strips indicates to me, that there may be a problem with the Video Cable. Then the screen Inverter is next in the diagnoses.
My money is on the Video Cable.

ALL power removed, Anti-Static Precautions FOLLOWED, I would check out the graphics chipset first.

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the laptop.
Left rear side. This is an example of a VGA Cable, and VGA connector. (VGA port on a laptop ),

http://en.wikipedia.org/wiki/VGA_connector

(Color of connector does Not matter. It is generally Blue, though)

You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

There are at least 3 display options available;
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the F5 key. (The F5 key is the Display Toggle-Over key)

No display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

Is the display on the external VGA monitor, the same as the internal monitor of the laptop?

Problem is the graphics chipset.

Display is fine on the external VGA monitor?
Problem is the Video Cable, screen Inverter, or LCD screen.

Video Cable:

A) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-14.jpg

Switch Cover removed, Keyboard removed. Shows you where the Video Cable plugs into the motherboard.

B) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-21.jpg

Palm Rest Cover you can see the white rectangular connector, for the motherboard side of the Video Cable, at the top left.
It's above the black cable, and near the screw hole.

The Video Cable leads from the motherboard, up through the left Hinge, and into the Display Assembly.
From there it connects to the screen Inverter, and back of the LCD screen.

http://www.ebay.com/itm/Toshiba-Satellite-A105-6017B0050801-LCD-Video-Cable-Genuine-OEM-Laptop-TESTED-/290754851160?forcev4exp=true&forceRpt=true

In the photo, (You can hover your mouse cursor on it to enlarge), the right side connector plugs into the back of the LCD screen.

The black connector to the far left connects to the motherboard.
The small white connector at the top with the Red, Green, Black, etc wires, connects to the screen Inverter.

(The small Black cable, that comes out from the black motherboard connector, is a Ground wire )

Due to the close proximity of the Video Cable to the left Hinge, it can be pulled on from just normal opening, and closing of the laptop over time.

This means the Video Cable connection on the motherboard side could be loose, or the LCD screen side, or both.

The diagnoses is to PHYSICALLY check BOTH connections. A loose connection at the motherboard, or at the back of the LCD screen could be so small in distance, that you will not see it with the human eye.

Could also result in damage to the Video Cable.
View the Video Cable with the Switch Cover removed, and see if there are any obvious signs of damage to the sheath of the cable.

If there is there could be damage to the tiny wires inside the Video Cable. (Stretched/Broken)

Use a multimeter set to OHMs, to check all wires inside the Video Cable for continuity, or have a 'Mom and Pop' computer store check it for a few bucks, or replace the Video Cable.

Video cable connections are tight? Video cable continuity check checks out OK?
Screen Inverter.

The test for a screen Inverter is to use a sensitive multimeter.
Read fairly expensive.

http://www.fonerbooks.com/test.htm

Not having access to a sensitive multimeter that you can use, means just replacing the screen Inverter. Seems like 'part changing', and it is, but you have to work with what you've got.

http://www.sparepartswarehouse.com/Toshiba,Satellite,A105,Laptop,Inverters.aspx

Find THE model number for your laptop, and the correct screen Inverter. A screen Inverter, and an LCD screen are a MATCHED unit.

Screen Inverter is checked out to be OK, or replaced, and symptoms are still the same, the problem is the LCD screen.

Remember, the first part of the diagnoses was to see if the divided parts were EVEN going across, or jagged and irregularly shaped.

Jagged in shape, and not even strips going across, means cracks in the LCD screen.
Replace.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

[ Main article for A and B links above;

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-motherboard-1.htm ]

For additional questions please post in a Comment

Regards,
joecoolvette

Oct 22, 2012 | Toshiba Sattelite A105-S2051 Notebook

1 Answer

Need the following drivers ...PCI Device...SM Bus Controller...Video Controller (VGA Compatible) for a Toshiba Satellite A105-S101, Windows XP Service 3. I went to Toshiba website...


There are 3 pages of downloads, have you downloaded and installed all relevant drivers?
I have looked about and a few people have had similar problems, but usually on laptops that came with vista and have been downgraded to XP.
The 3rd driver down on the second page is your vga driver

Aug 20, 2010 | Toshiba PC Laptops

2 Answers

Have to replace the keyboard.


Hello dgb_w0ddw,

Have you looked at the YouTube video examples for replacing laptop keyboards ?
http://www.youtube.com/results?search_query=replace+laptop+keyboard&aq=1

If this solution is helpful please click a thumbs-up rating below.

Have a great day,
martyshaw152

Apr 29, 2010 | Toshiba Satellite A105 Notebook

1 Answer

Toshiba A105-S101 No Video


One of the easiest ways to troubleshoot the no video issue is to get an external monitor and attach a vga cable to your laptop. If there is no problem with the video chip on the motherboard, the laptop will switch display to the external, if it does this and you have a picture, then your graphics chip is good and you may have just lost the screen and /or the inverter powering the backlight. If you do not get a picture OR if you do not see any activity with the hard drive activity led, then most likely you are having a motherboard failure in which your options are repair or replace.

Jan 21, 2010 | PC Laptops

1 Answer

Toshiba Satellite a105 s4004


Here, I found this:
Toshiba Satellite A105. How to remove and replace laptop FL inverter and LCD screen.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

Jun 23, 2009 | Toshiba Satellite A105 Notebook

1 Answer

My toshiba a105-s4344 has a line threw the screen where the top is darker than the bottom by alil bit and when the screen moves around the screen flashes and goes nuts what do u think the problem is the...


The problem with Lcd screen is that if you see line through them there are three possibiltys 1Your cable connection from the laptop to the screen is loose 2 the inverter is failing which mostlikly you will see backlite flashs and then blank screen or pixcels seem to get lost and return 3 bad screen pixcel lost in hole sections or line or lines than a total lost of screen chech all the connections first .connect a monitor to the laptop and see if you have the same problem if so it may be the video card on the board

Mar 25, 2009 | Toshiba Satellite A105-S4344 Notebook

1 Answer

Video Controller (VGA Compatible)... Missing


You will need to go to the Toshiba WEB site, to the support/download page, search for the video driver for Windows XP for your model laptop and install it on your laptop. There may be several version, download the latest.

Dec 09, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Black screen problem


you did not discuss how old, check the battery indicator bar,also check the video driver to insure you have a current version. Look in Control/Video.

Jun 28, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Toshiba Satellite A105 - S4547, screen goes black when using the battery (not plugged in)


check your control panel/video to ensure device driver is current. use driverguide.net.since when on battery no pic suggests that the battery life span is shortened. Recharge and check how long the battery level lasts when doing normal internet or document reviews. Video playing drains the battery at a high rate, when battery is already low, virtual memory tries to assist.

Jun 28, 2008 | Toshiba Satellite A105 Notebook

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