Solved Laptop will not boot

March 14, 2015 at 11:54:01
Specs: Windows 7, amd athlon
I push the power button, it lights up, the cpu fan spins for a couple of seconds, then stops, then spins again for a couple of seconds, then stops and everything shuts down. During this the hdd light flashes, but the hdd is good, tried it in a pc, it's actually ssd. Tried different hdd and same result. The screen never comes on. Any ideas?

Xynobis


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✔ Best Answer
March 21, 2015 at 14:48:06
Well, I decided to try to replace the CMOS battery and it turned out that was the problem. The laptop is running again, except the keyboard isn't working now, probably some cable got disconnected... Time to take it apart again...
Thanks guys for your help!!

Xynobis



#1
March 14, 2015 at 12:40:58
Let us have the make and model number of your laptop please.

Various possible reasons. If it is overheating (one cause of shutdowns) then it is very fast, pointing to something like the CPU heat sink has come adrift.

EDIT:
Does it work if the main battery is removed?

Always pop back and let us know the outcome - thanks

message edited by Derek


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#2
March 14, 2015 at 13:01:07
It's acer extensa 5420. It's an older model. That is my thinking as well, overheating. It does it with or without battery.

Xynobis


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#3
March 14, 2015 at 13:35:07
I assume it just suddenly started doing this and was not related to anything you did at the time.

Not hopeful but better try the motherboard discharge routine:
Turn off laptop, remove power, remove battery, hold Power Off/On button down for at least 20 seconds before re-assembly.

Have you had a good look for dust build up, particularly CPU heat sink, fans and vents?

Might be an idea to clean the RAM edge connectors with a pencil eraser while you are in there. Also check all connectors for tightness.

Always pop back and let us know the outcome - thanks

message edited by Derek


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Related Solutions

#4
March 14, 2015 at 15:36:54
Yes, it just started out of the blue. I clean it regularly, so there was no dust. I checked all the connections, cleaned the ram and replaced the original thermal paste with Arctic silver 5, bu tstill no luck.

Xynobis


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#5
March 14, 2015 at 16:09:28
Not easy to prove but tends to leave only the CPU or the motherboard.

Always pop back and let us know the outcome - thanks


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#6
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#7
March 14, 2015 at 19:59:41
My thoughts as well. Thanks!

Xynobis


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#8
March 21, 2015 at 14:48:06
✔ Best Answer
Well, I decided to try to replace the CMOS battery and it turned out that was the problem. The laptop is running again, except the keyboard isn't working now, probably some cable got disconnected... Time to take it apart again...
Thanks guys for your help!!

Xynobis


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#9
March 21, 2015 at 15:10:18
Seems an odd fix for the reported symptoms - presumably the battery was stone dead.

Thanks for the feedback anyhow and good to hear you've made some progress.

Always pop back and let us know the outcome - thanks


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#10
March 21, 2015 at 15:53:41
I agree, never would've expected that to be the problem.
Again, thanks for help!

Xynobis


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