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#754048 - 1st Jan 2013 7:32pm acer aspire 5742
kemirakid Offline
Enthusiast

Registered: 21st Aug 2011
Posts: 157
Loc: moreton
Hi,
I need help my sons back from uni with his laptop , which is just over 1 month out of warranty . It has started over heatingand turning off.Fan vents are clean . Any ideas?
Many Thanks

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#754060 - 1st Jan 2013 8:24pm Re: acer aspire 5742 [Re: kemirakid]
eggandchips Online   Reading

Forum Master

Registered: 2nd Nov 2011
Posts: 2424
Loc: wallasey
are you sure the fans working?

sorry if it seems obvious
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#754064 - 1st Jan 2013 8:38pm Re: acer aspire 5742 [Re: kemirakid]
Mark Online   Reading


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Registered: 9th Nov 2003
Posts: 21085
Loc: Wirral
If you can get into the bios check that the Cut off tempratures have not been lowered to say 70c the lower the temp cut off the sooner it will power off.

As above.
When you press the power button to Boot up from off you should have a fan blast before you see windows. Its like a self test to check if the fans can go to full power.

Hope that helps.
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#754065 - 1st Jan 2013 8:50pm Re: acer aspire 5742 [Re: kemirakid]
TheDr Offline
Forum Master

Registered: 23rd Feb 2010
Posts: 2631
Loc: Wirral
If he's been using it on his bed, or on his lap, chances are the thermal paste has dried out and it's now acting more as an insulator rather than a conductor.

It needs the heatsink removing, the old paste cleaning off and new applying.

This is something to do sooner rather than later as its cutting off to prevent damage from the heat it's getting, it'll work for so long and hen the CPU can fail.

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#754094 - 2nd Jan 2013 12:28am Re: acer aspire 5742 [Re: kemirakid]
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 16051
Loc: New Brighton
Aye and put it on a book as the ventilation on these are crap.

I have one and it only cuts out if it gets really hot.

You should always use it on a flat surface to avoid overheating.

Don't open it up yourself as you will not get it back together and you will damage the plastic that holds the screws in, these have a common fault with the front screws coming away that secure the bottom plastic cover to the top of keyboard corners.
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#754178 - 2nd Jan 2013 1:24pm Re: acer aspire 5742 [Re: kemirakid]
lemoncake Offline


Registered: 27th Dec 2012
Posts: 2
Loc: moreton
If you can't sort it yourself the staff in computer 64 in Moreton give a very good service, and charge reasonable prices too. I found them to be very friendly.

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#754182 - 2nd Jan 2013 1:42pm Re: acer aspire 5742 [Re: lemoncake]
reddragon Offline
Forum Guardian

Registered: 22nd Mar 2010
Posts: 3902
Loc: bromborough/wirral
and if your in Poundland / world they have laptop coolers in there you can sit your laptop on and I refuse to answer the obvious question "how much are they?" lol


Edited by reddragon (2nd Jan 2013 1:43pm)
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