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braincap

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100% CPU usage

Hello,

My father has a Desktop PC, and recently i have updated it. It had Win XP and 500 MB RAM and now i did put additional 3 GB RAM and Win 7 Pro 32BIT.
The problem is that it runs slow and whenever i tend to open an app, surfing the net, or watch a video online, it runs even more slower and eventually it blocks and needs restart.
The problem appeared from the beginning when i formatted the HDD and installed win, so there are no viruses involved.
Even in idle mode, the CPU usage fluctuates from 40% to 70%(or even more), on and on again, without any apps open. The CPU temp seems to be fine 50-53 Celsius Degrees.
While CPU usage shows high rates, the RAM memory remains aprox constant between 900 MB and 1,2 GB (all the time).
There are no suspect services running in background and those which are, don't consume the entire CPU at all (according to the TaskManager-Processes tab).

PC specs:
Intel Pentium 4 531 Socket 775 LGA - 3GHz
Motherboard: AsRock ConRoe865PE
RAM: 3,5 GB DDR400
Video NVIDIA GeForce 6200

It may be the CPU just too old for this OS?
Wainting for your opinions.

Thanks
Avatar of rindi
rindi
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Windows 7 should run fine on that hardware. From my experience it will usually run faster on the same hardware than XP did.

Have you installed all the drivers, particularly the chipset drivers? Are you using a real antivirus product, and not something crappy like any Symantec product (I'm very happy with Panda's free Cloud antivirus utility, it is very careful with the resources, and I have never yet been infected)?
Also open Task Manager and then the Processes tab. Sort by CPU and see what process is using all the CPU. Any properly performing OS (XP forward) will use less than 5% CPU more than 95% of the time.

User generated image
... Thinkpads_User
open task manager (CTRL+Shift+Escape) and go to process tab. Which processes use the most resources? take a snapshot from your process screen in task manager and send it here.
Dual Channel memory mode should be faster... try it with just two 1GB sticks in the blue slots (or in the black slots)... it won't go into Dual Channel mode if all the sticks don't match.

So, remove one of the 1GB sticks and the 512MB stick.

To be clear, activating Dual Channel requires the matching sticks be in matching-color slots, so put them both in the blue slots or both in the black slots.
braincap--Have you checked the number of processes running?  Perhaps too many are starting at boot.  Check msconfig Startup tab and Start|All Programs|Start up folder.
More sophisticated compare the info from Process Explorer at the beginning of a session with the info later in the day when things are slowing.
http://technet.microsoft.com/en-us/sysinternals/bb896653

Some antivirus apps, such as McAfee, can consume a lot of CPU.
In addition to the comment by jcimarron, also make sure processes are properly set up for minimum CPU. If you note my screen shot above, I have 133 processes running on my laptop computer and it runs very fast at very low CPU. It does take 4 or 5 minutes to start fully.

... Thinkpads_User
braincap--I meant to also mention that you should have only one active antivirus program running.
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braincap

ASKER

Thanks for suggestions so far.

The drivers are all up to date, (including BIOS). I have only one antivirus, and it doesn't consume too much at all.

I checked startup programs and deactivated the useless ones; anyway there were just few... - i had done this before i posted the thread.

I will take a print screen with the processes and post it here afterwards. As far as i remember "System Idle Process" had a very high CPU usage.

I thought that RAM might be invold because i hadn't respected the Dual Channel configuration with similar capacity dimms in each slot, but then why would the RAM graphic be stable and the CPU high sky?
System Idle Process is just there. It doesn't use any practical CPU. But do let us know about the other processes.
.... Thinkpads_User
Mismatched RAM wouldn't make a big difference in performance. Actually it would hardly be noticeable.
@braincap - Taking another line of thought here: Don't discount the possibility that the upgrade went awry, and possibly the answer here is to start yet again and do a fresh install of Windows 7.

... Thinkpads_User
braincap--Rather than a fresh install of Win 7, consider a Repair Install.
http://www.sevenforums.com/tutorials/3413-repair-install.html
It should not affect personal data or installed programs, but it is always wise to back them up.
For the moment i can't do a Win reinstall or a Win repair because i don't have phisycal access to the PC. From the beginning, the install went very very slow; from the boot sequence to the install itself. That's all i can say about the system history.
When you get access to the PC, first test the RAM using memtest86+, and if that is fine, test the HD using it's manufacturer's diagnostic utility (do the long test). You'll find those tools on the UBCD:

http://ultimatebootcd.com
http://ubcd.mirror.fusa.be/ubcd521.iso
Why you are making this  problem so complex!? It should be much simpler. I'm waiting for your screen shot from task manager. idle process is your free resources and you have too looking for other high processes.
also try this:
- open msconfig.exe
- go to services and hide all microsoft services and disable all remaining.
- restart pc and see what happens.

there should be a conflict with one of your background services or programs.
Ok guys, i checked the HDD with HDtune and it seems to be OK.
I have attached some print screens with services, processes, etc.
performance.JPG
processes.JPG
resource-monitor.JPG
services.JPG
Ok. you PC works norma but your cpu is too low for running these processes. you have the latest version of everything in that poor P4! :)
Maximum available ram in 32bit windows is about 3GB.

- as you can see "Team viewer" use lots of resources. exit from tray and disable the service.
- Disable windows visual effects specially those which have fade and animation effects. it's related to dwm.exe process.
- try to open less tabs in chrome.
Also check the CPU fan in your case. it should be old and you have to change the fan and its silicon for better performance.
Did you try it with just 2 matching sticks in the same-colored slots for Dual Channel mode yet?
"Did you try it with just 2 matching sticks in the same-colored slots for Dual Channel mode yet?"
Haven't try that yet, because i don't have physical access to the PC

"Also check the CPU fan in your case. it should be old and you have to change the fan and its silicon for better performance."
When i put the additional RAM, i vacuumed the dust inside the PC and checked the components. THe fan was OK.Next time i wil change the silicon as well, though the CPU temp is normal.

"Maximum available ram in 32bit windows is about 3GB  - the systems sees 3,56 GB RAM

- as you can see "Team viewer" use lots of resources. exit from tray and disable the service. - i was using Team viewer to conect remotelly and operate. The PC is in another city and it's hard for me to reach it.Anyway with or without Team Viewer, the PC has the same slowness.
- Disable windows visual effects specially those which have fade and animation effects. it's related to dwm.exe process.
- try to open less tabs in chrome."
- it were only 2 or 3 tabs opened. Even with one tab, the PC runs slow and the operating system gets stuck.
by closing teamviewer and disabling windows visual effects your cpu usage should be only around 10-15% and you will have lots of free resources. Does in this case still your pc run slowly?!
I mean does your PC runs slowly even with low resource (CPU and RAM) usage? if your answer is positive then I'm suspected to Hard disk.

what was the lowest cpu usage you ever seen in new windows and how often is in this mode?
does it come down after a period of time or you have to restart the pc to decrease cpu usage?


*sorry if I'm not very well in English :|
i ll try all of the above in 2 weeks or so. can the question be set on pending ore something similar?
You'll keep getting reminder emails... but now that you've posted, the cleanup crew should leave it alone for 3 weeks or so.
I'll come back with an answer after this weekend. Then i shall try all the suggestions
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i found out the problem