Solved 100% CPU usage!

April 8, 2011 at 20:23:54
Specs: Windows 7, 3.00 GHz , 4.00 GB ram

Well..... my cpu usage goes up to 100% whenever I open anything, explorer or fire fox or when I try to install a program

that's my pc

Processor : Inter(R) Pentium(R) 4 CPU 3.00GHz 3.00 GHz
Installed memory : 4.00 GB
Display adapter : Nvidia Geforce 8400 GS

I tried the next. but didn't succeed to solve the problem:

1- performed an virus scan using kaspersky and Avira.
2- performed spyware scan using spyware doctor.
3- performed malware scan using Malwarebytes Anti-Malware.
4- reinstalled the OS several times ( tried windows seven ultimate 64 and 32 bit and windows xp sp3 32 bit ).
5- formatted my hard disk then installed a fresh copy of windows.
6- checked the CPU temperature and made sure it's fine.
7- tried removing one of my 2 rams.
8- tried working with the build-in VGA card instead of the nvidia one.
9- tried restoring the BIOS default setting.
10- even tried changing the processor itself ( but with an older one ).
11- and of course tried to see which progress sucks up the cpu usage, and the result is that every program I open gets 90 to 100 % of the cpu usage!

and yet I couldn't solve this problem.

wonder if any of u can help me

thanks in advance

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✔ Best Answer
April 19, 2011 at 17:31:33

Thanks to all of you guys for helping me solving my problem.
Actually the problem is in my processor, I tried my friend's processor ( dual core 2.7 )
and everything worked great, so now I'm pretty sure it's my processor.

Again thanks to all of u for your help, and sorry for taking me so long to reply, I've been busy.

April 8, 2011 at 20:50:40

WOW, you are certainly a persevering individual!!! You also have an abundance of operating systems and what not. May I suggest Windows 7 64 bit, and leaving the video card in. You cannot solve your problem no matter what don't have one! It is absolutely, positively normal for a computer to get near or even flatline at 100% when first initializing any process such as opening a browser or beginning the playing of a movie, or when it's busy loading up all the background stuff on startup. Having several processor intensive programs running at the same time would cause this also. All normal. It becomes a problem if your processor remains at near 100% all the time, it would indicate you are overwhelming the processor and should probably get a beefier system. You have a quad core which should handle demand pretty good, but even if you double your system specs...when you initiate a process the cpu usage will spike right up, but it would come down pretty quick, and use a lot less cpu usage in general, given the same tasks. Decoding a dvd would keep cpu usage high, but would come down once finished the task. So unless your cpu is constanly bogged down at 100%, stop pulling out your hair. It's normal. You ask it to do a task and it devotes nearly 100% power to your task, in order to finish as fast as possible....normal.

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April 8, 2011 at 21:39:23

Well, thanks for your reply!
and that's what I'm trying to say, that is stays on 100% usage and lemme tell u some examples:
if u know a game called conquer online before that problem I used to open up to 10 clients with no slowing or anything, now when I open just one or two clients my cpu usage reaches constant 100 %
another example : when fire fox and internet explorer are opened at the same time the same thing happens 90 to 100 % constant cpu usage .
so I don't get it, is my pc that slow?! , do I need to upgrade it or anything?!

P.S : I compared between my pc and a hp laptop with i5 processor and 3GB of ram, and the result of that comparison in speed was like 1 to 50 or something although before having that problem it was like 1 to 3 and I think that's normal.

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April 8, 2011 at 21:58:57

okie dokie. Actually looking at your post again it is hard for me to tell if you have a quad core, or this is a P4 running at 3.0g. If you turn the computer on, let it load up until you are absolutely sure nothing else is running (hard drive light not flashing often), open up the cpu usuage, give it a sec to settle down from opening that.......and what does it average while basically doing nothing??? Do you have a ton of stuff loading on startup, two antiviruses installed, how many programs are running real time? just thinking aloud as you have tried many things. Under the performance and reliability section under cpu, it shows the process, and which ones are taking up all the resources. On-line games are hogs at times.

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April 8, 2011 at 22:11:59

ok, no it's not a quad core, it's P4 3.00 GHz , this is a newly installed windows with nothing installed but avira antivir personal and fire fox, with nothing running the cpu usage is about 3 to 10 % ,but when I try to open anything like fire fox my cpu usage turns 90 or so, then it settles down for a while, but even opening a new tab or hovering with the mouse over fire fox makes it goes up to 100 % , and ( fire fox + iexplorer = constant 100 % cpu usage )
I have no programs running real time or even above normal .

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April 9, 2011 at 07:51:49

I'm having to same problem! started 4 or 5 days ago. I have done almost exactly the same things as to what you have tried, but no processor removal or re-installation of Win 7. Thats the very last I want to try before trying other options. I've been working on this Dell Inspiron Laptop fo a solid 39 hours, still no clue. I have done all suggested in this post! turn off programs, turn on programs, virus scans, malware scans, you name it, i've done it! System is at 100% CPU usage att ALL times! Info on this system: Dell Inspiron 1545, 3GB RAM, Pentium Dual Core T4400, 64bit, Win 7, 220Gb HD - 24GB used - 194GB free. Currently downloading Win 7 "Service Pack 1" it's been downloading over 2 hours! only at 54% w/CPU flat line @ 100%! Even with ALL programs fully loaded w/NO HD flashing light it is stuck at 100%. I need some more suggestions, from others who have had this problem! Thank You! Masterofneon

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April 10, 2011 at 17:50:26

Realize you have an older CPU that is a single core processor with Hyper Threading. Make sure Hyper Threading is enabled in your BIOS to get the most out of your processor, but realize that it will not multi-process as well as a true dual core processor. Hyper Threading allows the processor to handle multiple processes by switching rapidly between threads and using your processor more fully, hence the higher CPU rates. If your HT is BIOS enabled and you have eliminated just about everything else, there is not much more you can do. You probably should have stayed with XP for the P4 and related older hardware, but others have successfully used it before. The problem is usually with drivers for the hardware.

Start your own thread (Post a new question) since your hardware is different and you have not eliminated possibilities as completely, your problem is really different.
1- Run Malwarebytes.
2- Open msconfig start tab and uncheck everything except MS (you can add some back later)
3- Post your own question....

You have to be a little bit crazy to keep you from going insane.

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April 15, 2011 at 10:41:36

Hey Moftasa, I think you have a problem in your motherboard, because already I have tackled it. You should try with your friends motherboard. No satisfied!! test your RAM and Processor with other CPU. Now I have 2.26 P4, 1GB RAM, 945 chipset, WIN7-32bit. Normally it is well but it is nuddy sometimes when running Photoshp, Video Converter, PowerDVD, Creating movie and other heavy application. I will be happy if you can get rid of this problem.

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April 19, 2011 at 17:31:33
✔ Best Answer

Thanks to all of you guys for helping me solving my problem.
Actually the problem is in my processor, I tried my friend's processor ( dual core 2.7 )
and everything worked great, so now I'm pretty sure it's my processor.

Again thanks to all of u for your help, and sorry for taking me so long to reply, I've been busy.

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