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Hey, I have this wierd problem that makes me throw the laptop through the window.

I have no idea why but the computer gets really really slow after about an hour and the cpu stays

on about 70%-100% usage.

what could I do to see why it's like that ? (by the way I formatted the computer like 2 times and it didn't help)

asked Jul 13 '12 at 23:20

erezhazan1's gravatar image


edited Jul 17 '12 at 19:24

roguekiller23231's gravatar image


;-) ;-) ;-)

(Jul 18 '12 at 12:14) Dr Frank Habberg Dr%20Frank%20Habberg's gravatar image

Now that's thinking with an "Open" mind.

(Jul 18 '12 at 13:06) ClosetFuturist ClosetFuturist's gravatar image

Nice thinking ! I'll try that right away !

(Jul 18 '12 at 15:51) erezhazan1 erezhazan1's gravatar image

12next page »

If you've had it for a while; the leading cause is dust.

answered Jul 13 '12 at 23:34

ClosetFuturist's gravatar image



I have this laptop only for 2 years, and I have this problem for about a year already, and I just restart the computer every time it happens.. and then after an hour it happens again

(Jul 13 '12 at 23:43) erezhazan1 erezhazan1's gravatar image

You should have it looked at. It probably just needs cleaned but after getting hot for such a long time the thermal compound between the processor and the heat sync is likely to be drying out. Dusting it out should make a big difference.

(Jul 14 '12 at 00:02) ClosetFuturist ClosetFuturist's gravatar image

it doesn't have nothing to do with something in the windows ? because in the beginning everything is ok but after about an hour suddenly I hear the fun of the laptop spinning like crazy and it starts to be really really slow and the CPU just jump to the sky.

(Jul 14 '12 at 00:09) erezhazan1 erezhazan1's gravatar image

Dust can do that by insulating heat syncs and restricting airflow. Processors slow down when they get hot.

(Jul 14 '12 at 00:36) ClosetFuturist ClosetFuturist's gravatar image

Processors are designed to slow down when they get hot. It's a protective feature. I think it was implemented starting at Pentium 4 with intel. I know my laptop did this once. I wondered why it became so slow. Core temp revealed it was hitting a boiling 100 degrees celsius. I checked and dust was clogging the intake. The heat sink was also not properly screwed in. I screwed the heat sink down tighter, blew out the dust, put the covers all back on, turned it on, and it ran a normal temp with all applications. (Around 50-70C)

(Jul 15 '12 at 01:54) josephLtech josephLtech's gravatar image

You are suppose to clean the heatsink on a laptop every 2-3 months (simply take a vacuum home to the air intake vent of the laptop to suck the dust out. I have done this with my laptop (cheap acer laptop) (for any laptop that i have, once the warranty ends, I take the laptop apart to give it a through cleaning and also replace the thermal compound with arctic silver 5)

On my laptop there was only a very slight amount of dust, (the extremely tiny dust particles that stick to things a bit better and is harder to clean off but there was never a dust buildup that could even get close to blocking air space in between any of the fins, and I run the laptop through a harder work cycle than most people (used it as a DVR for my security cameras)

also try to find out what is using 70% of your CPU. most times you will see someone complaining about high CPU usage and if you look at their task manager, you will see like 80-100 processes taking up most of their memory and also wasting CPU cycles.

(Jul 15 '12 at 22:10) Razor512 Razor512's gravatar image
showing 5 of 6 show all

As an aside~ is it just me that thinks, "why is it that the laptop fan is not made easily accessible so that you can clean the thing"? I mean, it would NOT be that difficult to do. My gosh- there are some laptops where it's impossible to even reach that area without a near-complete disassembly (& about 100 tiny screws of various sizes to lose)- or worse- the ones where you must lift the heatsink from the CPU to get to it!

End of rant~ ;)

answered Jul 15 '12 at 00:24

geekomatic's gravatar image


edited Aug 18 '12 at 23:34

Just burn a Knoppix CD (live linux) & boot to/run it. There's a cpu monitor built-in. See if the usage climbs when the hard drive/Windows is out of the equation? Gotta eliminate some variables... :)

answered Jul 18 '12 at 11:20

geekomatic's gravatar image


I would make sure the heatsink is snuggly against the CPU, as well as the vents clear of any dust or things that can clog it. What environment is this used in usually? (Bedroom, office, etc) Soft surfaces can clog the vents.

answered Jul 14 '12 at 00:23

josephLtech's gravatar image



That's exactly what I was thinking; an air flow problem raising the ambient temperature in the case.

(Jul 14 '12 at 00:31) ClosetFuturist ClosetFuturist's gravatar image

almost always it's used in the living room. the doors are almost all the time closed because the AC is working. the temp is 60C +- and I have i5,8GB ram.

(Jul 14 '12 at 00:35) erezhazan1 erezhazan1's gravatar image

definitely dust in the cpu fan, and its over heating, with those specs, and the i5, i'm guessing quad core, gets very hot and over time the heat builds up and when you shut it off it gives it a chance to cool briefly,

(Jul 14 '12 at 01:08) pjob797 pjob797's gravatar image

first thing, get core temp and run it while the slowdown is happening http://www.alcpu.com/CoreTemp/

then also install codestuff starter and disable any item you don't want automatically starting. http://www.snapfiles.com/get/starter.html

most applications don't need any of their startup entries to function normally. They simply add them self to the startup to give the appearance of a faster app startup since it is already running (even when it is not needed or wanted)

PS you cannot tell how dusty a heatsink is from the look of the outside vent. Compared to a desktop CPU heatsink, a laptop heatsink uses thinner fins that are closer together to increasing the cooling surface area. The down side is that it clogs significantly faster than a desktop heatsink.

Another thing is that certain laptops such as the thinner/ more stylish ones will use a cooling solution where at full load the CPU will only stay 5-10C under the overheating temperature. (For example a macbook pro will throttle if you run mental ray on it if you have not cleaned the heatsink in a few months)

(PS while the macbook pro has heatsinks that are too small (not designed with bust buildup in mind) their overall cooling design is currently the best on the market as the vents are all located on the side instead of the bottom so placing it on a lap wont cause the air intake vent to be blocked and cause high temperatures to reduce the system life span)

answered Jul 15 '12 at 22:18

Razor512's gravatar image


edited Jul 15 '12 at 22:20

Hey, before I do anything I wanted to format the computer to make sure it isn't a software program. so after I did the format here are the results:



answered Jul 17 '12 at 01:23

erezhazan1's gravatar image


edited Jul 17 '12 at 01:31


I think you need to click to show processes from all users- in the second photo, you're only showing 3% total CPU use in that column- though you show 74% overall? There isn't a show of what program or process is chewing up the rest...

(Jul 17 '12 at 04:13) geekomatic geekomatic's gravatar image

Is the networking tab showing a lot of activity?

(Jul 17 '12 at 12:46) ClosetFuturist ClosetFuturist's gravatar image

no there isn't something special in the network tab

(Jul 17 '12 at 12:58) erezhazan1 erezhazan1's gravatar image

See if there are any warnings in your event viewer.

(Jul 17 '12 at 13:39) ClosetFuturist ClosetFuturist's gravatar image

I checked in the event viewer in the certain minuet and there were no warning.. is there any chance that this is a heat problem only ?

(Jul 17 '12 at 14:15) erezhazan1 erezhazan1's gravatar image

Not with all of that processor activity.

Check control panel, system and maintenance, administrative tools, event viewer and click on the application and system entries and look at the lists on the right.

(Jul 17 '12 at 14:40) ClosetFuturist ClosetFuturist's gravatar image

no not a heat problem only a heat problem will cause shut down completely it will not cause the processor to run flat out all the time ..

(Jul 17 '12 at 14:44) jadtechnic jadtechnic's gravatar image

In the post it says high cpu and 70-100. I assumed that it was temps because there was no % sign, re-install didn't help and that CPU will dial back when it gets hot just like the box models which would slow it down. I should have known better anyway.

(Jul 17 '12 at 15:23) ClosetFuturist ClosetFuturist's gravatar image

no I meant 70-100%, about the temps when it's slow it's about 60-65 even 70 somethings Celsius

(Jul 17 '12 at 17:28) erezhazan1 erezhazan1's gravatar image
showing 5 of 9 show all

just to be clear here on the peice of a Modern lap top which is basically obsolete replaced by ultrabooks, notebooks ..

there is the power lead , charger power supply, battery, keyboard & trackpad , monitor , case, HDD, Motherboard which everything else video card, sound card CD/dvd drive burner, fans , are on board all one part, some laptops have a compartment where you can plug in additional ram others do not . that is it if one thing goes wrong other then the HDD you pretty much toss it out get new because it can be repaired but the bill will run you $500 with the motherboard and bench charges ..

talking to a few people in the industry selling computer and lap tops for years not long ago told me basically there was one company left that was assembling lap tops no matter what name was on them and last summer they ceased making and assembling laptops all that has been sold since is warehoused stock from over supplying a slowed sales once the supply is gone its gone they will be no more , desk top you can still order directly or build your self for now but they not assembling them any longer either anything out there bought today was produced between 2006 and mid 2011 ..

answered Jul 17 '12 at 16:07

jadtechnic's gravatar image


edited Jul 17 '12 at 16:19

Here's the long and short of it:

What ever it is there is an event or a process associated to it. If you can't view all of the processes you find a way to view all of the processes. You look for errors and warnings in the events. You could even look in the device manager for hardware issues. If you want to fix it you have to dig in and find it.

answered Jul 17 '12 at 16:22

ClosetFuturist's gravatar image


answered Jul 17 '12 at 18:03

erezhazan1's gravatar image


edited Jul 17 '12 at 18:08


Did you try clicking on the "show processes from all users" button in task manager? That shows all of them.

(Jul 17 '12 at 18:36) ClosetFuturist ClosetFuturist's gravatar image

Check out the user accounts and see if there's one for ASP.net

(Jul 17 '12 at 19:08) ClosetFuturist ClosetFuturist's gravatar image

Nope, there is a guest account and it's off

(Jul 18 '12 at 15:46) erezhazan1 erezhazan1's gravatar image

some people are getting confused between CPU usage and CPU tempurature. from the screenshots you have uploaded your talking about CPU usage.

in the task manager open the 'Performance tab' then open 'resource monitor' (at the bottom of the tab)

Click on the arrow pointing down on the CPU section, this will show all programs that are running and how much CPU usage they are using.

now click on either 'CPU' or 'Average' to bring the culprit(s) to the top, google the process and find out what it is and if anyone else has had the same issue with the process.

If your having thermal issues, download speedfan to see the temuratures, your CPU might be throttling down to cool so is making processes take longer and more CPU usage.

answered Jul 17 '12 at 19:23

roguekiller23231's gravatar image


edited Jul 17 '12 at 19:27


What windows 7 version do you have? I like those features.

(Jul 17 '12 at 20:18) ClosetFuturist ClosetFuturist's gravatar image

i got vista Ultimate and windows 7 home premium, both 64bit. i'm pretty sure all versions of windows XP and newer have the feature.

(Jul 18 '12 at 13:16) roguekiller23231 roguekiller23231's gravatar image

I have XP Pro on one system and Home on this one and neither have added features in the performance tab. :(

(Jul 18 '12 at 13:38) ClosetFuturist ClosetFuturist's gravatar image

it's Windows 7 Enterprise, and that's the problem, I just formated the computer so I don't understand what could cause that. I just checked the temp program and the temp is going high to the roof !


(Jul 18 '12 at 15:50) erezhazan1 erezhazan1's gravatar image

from the old screenshots, it looks like it's chrome that is doing it and your Intel Graphics drivers. have you updated your drivers on the intel site? what comes to the top of the resource monitor when you check CPU usage/Average now??

ClosetFuturist - they have a poorer version 'resource monitor' which is 'performance monitor'

Click Start, click Run, and then type perfmon.msc in the Open box.


(Jul 18 '12 at 23:14) roguekiller23231 roguekiller23231's gravatar image
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Asked: Jul 13 '12 at 23:20

Seen: 3,152 times

Last updated: Sep 08 '12 at 14:32