system crashed and failed to boot up with no display on the

April 18, 2012 at 02:53:45
Specs: window 7 home premium, 4gig

i had prviously had my system screen displaying irrelevant lines and the system will hang and reboot and every things will be back to normal. the next day it the screen display those lines again even before booting into wimdows this prompted me to do the sfc /scannow. the sfc /scannow reported that there were corupt file unable to fix. i shut down the laptop and tried to boot it up but the laptop did not boot again. the fan rolled, dvd seems to be ok. but d screen does not display anything even when i use a flash light to view it. I get some i deas on how to trouble-shoot. So i reseated the ram. the system have two rams one on top and the second at the bottom of the first. i removed the ram, the one at the top and inserted the battery and press the power. the system started and ask me if i want to start windows normally or with safe mode e.t.c. I chose the normal start up and d screen display the normal "starting windows" screen and then it just black out and booting stops with the fan still rolling. i tried removing the ram at the bottom but on pressin the power the fan just rolled the the system shut down, without any display on the screen this also happen when i remove both ram, and when i insert both. Please what do i do next i need your help.
The laptop is Toshiba satellite L655

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April 18, 2012 at 04:57:56

"the next day it the screen display those lines again even before booting into wimdows"

If the display is garbled before Windows loads, you most likely have a hardware problem such as a failing or overheating graphics chip. You will NOT get a display without the RAM being installed.

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April 18, 2012 at 05:10:25

The laptop displays when i remove one ram. pls what should i do

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April 18, 2012 at 05:54:58

Double posting is against forum rules, please stick to one thread.

If the graphics chip is damaged due to overheating, there's no easy fix, you would probably need a new motherboard. Did the bad display look like any of these examples?

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Related Solutions

April 18, 2012 at 06:32:13

what am saying is that the system did not boot at all and no display too. but i tried trouble shooting by removing one of the rams and it boot and display but the screen black out before it boot into windows. I dont no what i should do next. Please help me

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April 18, 2012 at 06:54:43

You didn't answer my question. In the OP, you stated, "prviously had my system screen displaying irrelevant lines". That generally is an indication of a problem with the graphics chip. Did the "irrelevant lines" look like any of the examples in the link I posted in response #3? If these "lines" are (or were) appearing immediately at bootup, before Windows loads, it's a hardware problem, not a software problem. And as I said, if the graphics chip is/was damaged due to overheating, there is no way to fix it other than to replace the motherboard or replace the entire laptop.

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April 18, 2012 at 07:46:09

it does not look like any of the examples in the link. Also when i boot it with one ram removed the graphics were pretty ok. But the system did not boot into windows. I thought maybe because there's only one ram inside instead of two. i removed one just to trouble shoot. on putting the two rams the system will not boot at all. Thanks so much patience. I really need your help

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April 18, 2012 at 13:22:54

Here lets keep this all on one Post okay, So we don't confuse everyone.

So If one stick works and you don't get any graphical errors and with the other stick you get graphical errors and with both sticks the system does not boot. Then one of your sticks of ram is defective and your windows install is corrupted.

Let just check though. The one stick that you have that allows you to turn your computer on, does that stick work in both slots? If it does, then when the computer is starting, tap the F8 key.

Select repair my computer and proceed to log into the recovery console.

Now do a system restore back to an earlier date before your windows was corrupted.

Let me know how that goes.

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April 18, 2012 at 15:13:32

i remove both sticks and plugged it into each others slot. i found out that one work on both slots and actually the system boot with it but the second ram stick did not work on either slot. and on pluging both the system did not boot or display. Should i continue with system repair with one ram. Y did the second ram did not work. Thanks

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April 18, 2012 at 18:10:56

The second ram stick is bad. so mark it bad with some tape so you don't get them mixed up.

Continue trying the system restore as I posted earlier.

Let us know how it goes.

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April 19, 2012 at 00:04:46

ok. i power the system tap F8 i clik to directory services restore mode the system boot but the screen just display a white line all through and the system shut down. I reboot the system tap f8 again but chose "last known good configuration" this time around the system boot into windows no graphic problem at all. i even tried play a music and it played. I the shut down and boot it up without taping anything. it also boot and everything went normal. Please what should i do next. Also what about the white line background it shows the first time. Thanks

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April 19, 2012 at 01:23:07

That's good that you have gotten back into windows, but I am concerned about the white lines that you are talking about.

I thought that the lines went away when you removed the one bad stick of ram? You didn't put it back in the computer did you?

Does your screen look like this, but with white lines?

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April 19, 2012 at 02:06:21

i did not plug the damaged ram stick. The lines does not look like the ones in the link instead it was more tiny and vertical and white in colour. Though After that first one it has not been showing again. I ran toshiba PC diagnostic test on display windows.(the service came with the system) and i got a green bitmap screen which as i know means it passed the test. I don't know, could this be associated with the graphics chip? What is d association between it and ram. What can i do to be certain of what is going on. Thanks

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April 19, 2012 at 04:05:18

The graphics sub system uses the system memory as video ram or "VRAM" This is called shared memory. So if your system RAM is bad the video image will be bad as well.

Can you find a picture on-line of a display that has the same sort of lines that you had.

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April 19, 2012 at 04:33:26

I think it look similar to white screen. does that means the second ram is also getting damage too?. How can i trouble shoot ram and be sure, what do i do about the bad ram. Is there any way to trouble shoot the graphic chip? so as to rule it out. Thanks

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April 19, 2012 at 05:06:27

You can test your currently 'working' memory (RAM) stick with Memtest (you download the ISO image and burn it to a CD and then boot to the disk you just made. You may need to reset your BIOS to boot to boot from your optical drive before your hard drive.) Let it run through all tests, any errors is cause to replace the memory. Your laptop probably runs as dual channel memory so I would recommend replacing the memory as a matched pair for best results though.

You have to be a little bit crazy to keep you from going insane.

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April 19, 2012 at 05:47:09

ok where do i download the memtest. I have only plug back one ram how will this affect the system how soon must i replace the second ram?. and what about the other bad ram stick. What about graphic chip too how can i trouble shoot it. Thanks

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April 19, 2012 at 09:55:15

I really appreciate the effort of all of you, thanks a lot. I got a new ram and plugged it into the slot which means the two slot are plugged, i power the system and it boot. I think my system is pretty good now. please what can cause a ram failure or what can damage ram?

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April 19, 2012 at 11:37:09

Are you saying that your LCD went all white? did it kind of just fade to white? if it did then, bad LCD cable or bad LCD.

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April 20, 2012 at 04:15:58

Thanks so much Gretti. It has not repeat itself since then. I think the system is Ok. The problem was bad Ram which you guys help me to fix. tanks so much, thanks to every one. Yet i want to know, What can cause damage to Ram, or make it malfuntion. Thanks

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