Laptop cant start after dissasembly

Z

Zlatan

New Member
Hey guys,


I have a Toshiba L455 laptop. A while ago I noticed that its cooling fan failed, it woould work for an hour and then overheat and switch off.


I ordered a new fan from ebay and when I got it I dissasembled the laptop and replaced the fan and re-assembled it. It was my first time so there were a few niggles, but I think I did everything correctly.


When I tried to switch on the laptop again it wouldnt start. The hard drive makes two clicking sounds and then just stops. The display never turns on.


I thought the hard drive was dead, so I tried putting it in another laptop that works. When I switched it on I got the option which OS I wanted to boot (I have both WIndows 7 and Ubuntu installed) and I get the options if I want to boot in safe mode, etc, and I got the windows screen, but I'd get a blue screen in a split second and the laptop would restart. I could not get it to boot to desktop.


When I tried the hard disk from the good laptop in the Toshiba the same thing happened as with its original hard drive. I hear a click or two and then nothing happens. The HDD lamp on the laptop lights up when I hear the two click but then it stops. So I concluded that its probably not the laptop.


Does anybody have an idea what it might be? I realize that I've probably messed something up, but perhaps there is an easy fix or something I need to do to fix it?


If it makes any difference, the laptop stood turned off for a few months after it got broken until today when I tried fixing it.


Thank you guys for your help in advance :)
 
Probably should tear it back down and make sure you hooked everything back up right. The reason why a different hard drive won't boot up in a different machine is because its looking for certain hardware that isn't there so it reboots on you.
 
johnb35 said:
Probably should tear it back down and make sure you hooked everything back up right. The reason why a different hard drive won't boot up in a different machine is because its looking for certain hardware that isn't there so it reboots on you.
Click to expand...

Oh, thats probably why I couldnt boot it in the good computer.


I've looked at everything and I think everything is well connected, there are only 5 connecters from the top cover: 2 for speakers, touchpad, power button and keyboard, and they are all connected.


Is it possible that the procesor has gone since it didnt have a cooling fan? Although it would autmatically shut down when it overheated.
 
johnb35 said:
All laptops have a cooling fan. They don't cool very well without a fan.
Click to expand...

Sorry, what I meant was when the cooling fan stopped working (before I replaced it) ;)


Is it possible the processor got damaged then, although it shut off when overheating?
 
You said you replaced the fan. Does the fan work? Is the replacement fan the same as the original? You may have a bad fan.
 
johnb35 said:
You said you replaced the fan. Does the fan work? Is the replacement fan the same as the original? You may have a bad fan.
Click to expand...

Yes, I did replace the fan. However, before I replaced it I used the computer for a day or two with the fan not working (i'd use the computer for an hour then it would switch off. I'd let it cool down for an hour and then use it again).


I ordered the same type of fane from ebay and today I put it in. The fan works, I can sense it blowing air for a few second while I hear the hard drive. Then after a second or two everything stops and nothing happens anymore.
 
I figured it out.


After you told me to check whether I connected everything, I went through everything again and saw that I didnt put in the ram memory properly. Now everything works.
 
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