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: High CPU usage when computer is not being used.

13 Jun 2018   #1
Sylveon Fetish

Windows 7 Ultimate 64-bit SP1
 
 
High CPU usage when computer is not being used.

Sometimes when I wake up in the morning, the fan on my CPU is going full blast on my Dell Optiplex 780. This tells me that the CPU is being maxed out. However, I never get to see what process is causing the overload because by the time I turn on my monitor and move the mouse, the computer immediately calms down, every time this happens. If I am quick enough, I can see in the task manager that 50% - 70% of the CPU is being used and it drops to zero in just seconds—too quick to see what process it was. I am sure it was 100% CPU before I moved my mouse.


This problem does not happen a whole lot, just enough to raise some concern.


Does anybody know what the problem could be?


My System SpecsSystem Spec
.
13 Jun 2018   #2
TechnoMage2016

Windows 7 Ultimate, SP1, x86
 
 

As a computer tech of over 30 years, my best advise would be to turn OFF your computer when you're done using it. Then you won't have the problem as you outlined it.


Cheers!
My System SpecsSystem Spec
14 Jun 2018   #3
F22 Simpilot

Windows 7 Ultimate x64
 
 

I have seen so many problems with people use sleep or hibernation mode. Just shut it down. If that still doesn't work we can move forward with some other solutions.
My System SpecsSystem Spec
.

17 Jun 2018   #4
Nasty7

Windows 7 Home Premium 64bit
 
 

I don't think that there is anything wrong at all, but that is just speculation. Computers run tools after the computer is idle for a certain amount of time, or at designated times. Most common is a Defrag, or Phoning Home, or Looking for Updates etc. I'm not familiar enough to go on about it more. I know my Linux box will look for updates like every half hour while idle, or so it seems to me from memory.

Unfortunately I don't have much good advice either. But, if it were me, I would Leave the Monitor On all the time, meaning visible desktop 24/7 until you get the info you want.

Then Open Task Manager > Options, and set it as Always on top. Though not needed, this way you can have it on top when needed in the future also, I find this very helpful. Now leave it all on, with the Processes Tab open till next morning so you can clearly see what is using all the CPU.

You can also use the Event viewer to get some info on what was running at that time in the morning. It will show the exact time for all processes.

There is also a tool called Process Monitor from Systernals. But I have never used this tool so cannot advise as how to do so.

Good luck
My System SpecsSystem Spec
Reply

 High CPU usage when computer is not being used.




Thread Tools




Similar help and support threads
Thread Forum
Svchost.exe Crazy High CPU Usage and Crazy High Memory Usage
There is a serious issue with svchost.exe on my windows 7 computer. My HP Touchsmart 300-1025 has windows 7 64bit installed and svchost is slowing down the computer and using very high cpu and memory usage. It is not a virus or malware. I know the computer is not infected because one the computer...
Performance & Maintenance
Very high physical memory usage, no high usage programs running
Hello everyone, I've been having a very weird problem recently, in which I BELIEVE is involving high physical memory usage. Sometimes I will be doing things such as playing a game, or watching a stream, and my computer will run fine for a little while. But at random times, my computer will majorly...
Performance & Maintenance
Very high CPU usage, causing very high laptop CPU temps (90c idle)
This problem began yesterday. I noticed my CPU was at 90C constantly with very high CPU usage (>50%). I had no major programs running. I rebooted several times and the program persisted. 1. I went into safe mode and everything was normal. So this rules out hardware issues. 2. I reformatted and...
Performance & Maintenance
Computer Lag - High Physical Memory Usage
Hey, Wondering if anyone of you more experience Windows 7 users can help me with the system lag problem I've got going on at the moment. I did a Google search and found quite a few posts on this forum alone re: lag/high memory usage and for the last couple of days Ive been giving my system...
Performance & Maintenance
Windows 7 random CPU usage and high physical memory usage!!!
Ok, I am literally KILLING myself over this! I installed Windows 7 64Bit over XP around a month ago and it was so good that I recommended it to my brother who was previously on XP too. We got him a copy of the 32bit version as he has only 2gb of memory, and he installed it on his machine....
Performance & Maintenance


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 16:19.
Twitter Facebook Google+