Question about HP ProBook 4540s Notebook PC ENERGY STAR
It starts up for 5 seconds and then shut down by itself all the while the fan is running at full blast. pc isn't hot. What now?
Posted by Anonymous on
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Posted on Jan 02, 2017
there is two screws under the touch bad but they don't look like a screw i don't no the name of it in english but they are somthing that the srew goes into it you must remove them and every thing will be easy to open and replace the motherboard
Posted on Oct 25, 2009
If computer turns off when idle, then check power saving settings, accessible from control panel.
If laptop turns off while you are using it, try first reinstalling the system to exclude system problems, or test the laptop starting OS from CD or staying in Bios settings mode, so to exclude installed system.
If laptop is still shutting down, then problem may be overheating.
Overheating usually happens when the fan is not coming , therefore when the computer overheats.Or the fan is not cooling enough and computer is overheating.
Monitor computer temperature using a software, check if Fan is coming up when temperature gets critical.
If fan comes up but does not cool enough, then replace the fan, it is not efficient anymore because of a bad bearing or dust. ~Also ensure that fan is well mounted, if fan has poor contact with CPU surface , cooling will be poor.
If fan does not come up, and critical temp is not detected, then the sensor on motherboard is bad, this is very uncommon. When this happens the problem is usually related to system or power settiings , rather than overheating.
If fan does not come up and temp is critical, then fan is faulty, replace it.
There are also more than one fan on many laptops, check that one of the fans (CPU fan, video fan) is not completely ded, and therefore cause for the problem.
By using the software below you can also find out if the problem is really overheating. If temperature results within normal range, then usually it is not overheating.In that case test systtem and check power saving settings.
Here is the software to control your fan and temp. sensor state:
Download SpeedFan - Access temperature sensor in your computer
Download SpeedFan 4.38
SpeedFan - Free software download
Posted on Oct 25, 2009
try pushing on the upper right corner of your laptop, above the home key, does it start up again?
If so its the maxim chip
if not take one so dimm out and dissable wireless.
Could also be your battery not charging because a battery or power cord malfunction.
Posted on Jan 11, 2010
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