Dead laptop came back to life, now dead again

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chessonly

TS Rookie
Hi

my toshiba laptop was dead, the powerlight came on, the hard-disk was spinning but the screen remained blank.
I tried everthing , stripping it completely, trying a new ram and narrowed the problem to the motherboard or the cpu. i.e I can conclude that the problem is with the the mobo or the cpu.
This was a month ago.

Today I switched on again and voila! it worked, the bios loaded! I had removed the hard-disk, so switched it off, attached the HD and started it up again.. this time it didn't work. And hasn't since. I have again stripped it down , but it still doesn't work.
CAn anyone plzzzzz exlplain what is going here?? I mean it started , that means nothings fried, right??

Thanks

btw the fan spins for exactly 5 seconds before turning off.
 

mscrx

TS Rookie
there is something like a "hardware reset" available on many laptops.
- try to plug out everything except cpu and memory
- remove the battery and do not attach the power supply
- open the lid and hold the power on button for like 20 seconds
- plug everything back in and try to boot
that worked for me for some compaq and dell laptops which did act like yours

my two cents...
mscrx
 

tipstir

TS Ambassador
Either there is a short on the plug socket where you connect the AC to or the MOBO has a fault in it. Best to just have the MOBO replaced. I didn't have spare parts so I just did it a quick way just take out the HDD and stick in to a system that works! Only do this if the unit isn't under a protection plan.
 

ssveloso

TS Rookie
Hi to all

:) I would like to share my knowledge in repairing Laptop & Desktop Computer to everyone, that's why i join here. Thanks
 
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