Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Intermittent 100% CPU load, slow down, can't find the cause

03 Oct 2018   #31
pmhutch

Win 7 Pro 64 bit
 
 

By the way, I have disabled all the non-Microsoft scheduled tasks in the Task Scheduler Library (see screen shot).




Attached Thumbnails
Intermittent 100% CPU load, slow down, can't find the cause-task-scheduler-library-tasks-disabled.png  
My System SpecsSystem Spec
.
04 Oct 2018   #32
pmhutch

Win 7 Pro 64 bit
 
 

Just to add to something I mentioned in an earlier post:

The problem of 100% CPU often seems to be related to a legitimate task than suddenly starts receiving too much CPU time.

For example, earlier this evening I was running Chrome with ProcessExporeer and Windows Task Manager (Performance tab) running on another screen. Suddenly the CPU load went up to 100% in Win Task Manager and the CPU figure for Chrome in Process Explorer went shooting up to a high figure - one of the many Chrome Processes was at the top of the list. The machine slowed down, juddering cursor movement etc.

I went to the Processes Tab in Win Task manager and aborted all the Chrome processes and the CPU load then dropped down to a low figure - under 10%.

This happened to occur with Chrome this time, but I am pretty sure that I have seen it occur with other tasks or processes suddenly getting (or taking) an excessive amount of CPU resources when Chrome is not running. In other words, I don't think it is a problem with Chrome (though I am aware that it is a resource hog in normal use).

Something in Windows' system management seems to be sporadically boosting the CPu allocation to a running task or process, to the detriment of everything else - so I'm not sure that the problem is due to a rogue program or scheduled task (e.g. a program updater).

I'm a bit of a novice at this so I stand to be corrected - and any further help will be greatly appreciated as this problem is driving me a bit crazy.

Thanks
Paul
My System SpecsSystem Spec
04 Oct 2018   #33
Megahertz07

Windows 7 HP 64
 
 

I don't know why people like Chrome. It loads at startup, has high resources consumption and spy everything you do.

As you have disabled all tasks, chrome won't load at startup. Try to use another browser (even MS IE) to see if you get the issue.
My System SpecsSystem Spec
.

05 Oct 2018   #34
pmhutch

Win 7 Pro 64 bit
 
 

It still happens even when I'm using Firefox and not Chrome.


Is there a disgnostic tool which is better than ProcessExplorer or ProcessHacker which will give insight into what the CPU is busy doing?
My System SpecsSystem Spec
05 Oct 2018   #35
Megahertz07

Windows 7 HP 64
 
 

Sorry, can't think anything else to do.
My System SpecsSystem Spec
05 Oct 2018   #36
Snick

Win 10 x64, Linux Lite, Win 7 x64, BlackArch, Kali, VMWare Workstation Player, OpenVPN
 
 

Have you tried viewing running processes with
WinDirStat - Windows Directory Statistics
My System SpecsSystem Spec
06 Oct 2018   #37
F22 Simpilot

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by pmhutch View Post
It still happens even when I'm using Firefox and not Chrome.

But did you uninstall Chrome?
My System SpecsSystem Spec
06 Oct 2018   #38
F22 Simpilot

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Snick View Post
Have you tried viewing running processes with
WinDirStat - Windows Directory Statistics

I use WinDirStat and as far as I know you can't see running processes with it. You're far better off with something like Process Explorer or Process Hacker.
My System SpecsSystem Spec
06 Oct 2018   #39
F22 Simpilot

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Snick View Post
Have you tried viewing running processes with
WinDirStat - Windows Directory Statistics

Echo? You made this post twice now.


Intermittent 100% CPU load, slow down, can't find the cause
My System SpecsSystem Spec
06 Oct 2018   #40
F22 Simpilot

Windows 7 Ultimate x64
 
 

Can you please run Autoruns again and post the ARN file.
My System SpecsSystem Spec
Reply

 Intermittent 100% CPU load, slow down, can't find the cause




Thread Tools




Similar help and support threads
Thread Forum
Intermittent WiFi Connection Issues - can't load web pages
Hello. I'm having a ton of trouble with a W7 (Home Premium 64 bit) laptop. As per the title, the wifi connection on this machine on my home network is spotty at best. Frequently loses internet connection and is generally very slow, even in the room that the router is in. This is the only device on...
Network & Sharing
Slow boot, followed by crash and reset. Very slow repair center load
Running Win7x86, and it started getting extremely slow, within 2 days of this it started refusing to load at all. The system is brand new (ready built from ebuyer), and the only alterations have been a sysfan, spare hdd, spare dvdrw. When trying to load the boot screens take AGES, often...
General Discussion
Slow start-up; crawls into BIOS setup; then slow to load windows
Hi there, please can you help? I realize this BSOD might be a commonly reported problem but the issues here seem not to have been addressed specifically by other threads so I hope I haven't opened a new thread unnecessarily. Anyhow, here goes...:) Various pc problems have arisen since coming...
BSOD Help and Support
Intermittent slow start up.
My laptop is an Acer 5738Z with Windows 7 Home premium and NIS 2010.It is about 6 months old and I have had no problems until recently.It is an intermittent problem.My welcome screen normally appears in 30 seconds and the wallpaper around 40 seconds.Every now and again,this takes around 70 seconds...
Performance & Maintenance
Firefox & IE8 slow to show, slow to load remainder
I have a strange issue where every webpage (whether via Firefox 3.5.2 or IE8) will always load slower on my Windows 7 system as compared to my Macbook Pro. Both computers are wirelessly connected. I've ran speedtests on both systems, and both come out the same - 5.75 Mb/s (down) .95 Mb/s...
Browsers & Mail


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:15.
Twitter Facebook Google+