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: CPU Core 1 - 100% other 7 cores 0-10% Freezes PC


05 Jul 2012   #1

windows 7 professional 64bit
 
 
CPU Core 1 - 100% other 7 cores 0-10% Freezes PC

Ok guys, ive read similar problems to this over the forums all with similar answers and none of them worked. so here's the problem. my PC a few weeks ago after turning it on the mouse became extremely laggy and i noticed the Core1 on my quad core i7 2600K was completely maxed. after checking processes running from all users and system processes nothing could even nearly make up for this usage.

after about a week of avoiding the problem it got to the point were the pc wouldnt even turn on.

i ended up fresh installing windows 7 professional back on the computer. completely wiped the hard drive. and again after windows updated (wich may be the problem but is very inconsistent) the problem came up again. yet sometimes when i restart my PC there is no problem at all. ive attempted to update every driver i can and my pc is only 6months old. 8GB Ram. GTX 570. i7 2600K. 1TB HD.

I have attempted every anti virus scan in the world including malware bytes and all find nothing (due to the clean install) so i know its not a virus which only leaves the possibilities of corrupt drives or hardware(which wouldn't make as much sense seeing as it works 50% of the time)

During the phase were the CPU sits at 100% which can be anytime up to 10minutes and it will continue doing it after a short downtime of being able to move the mouse. the computer is completely dysfunctional and nothing can be done or clicked on.

if anyone has any suggestions as to how to fix this problem it would be greatly appreciated as if spent many days attempting to fix it with no success.

My System SpecsSystem Spec
.

05 Jul 2012   #2

Windows 7 Home Premium 64bit 6.1 Build 7601 (SP1)
 
 

Since you say sometimes it won't even start, that could be a hardware problem. Start by running Memtest for a few passes.

Something else to try is changing your Power Option from Balanced to Performance. I believe Windows 7 defaults to Balanced, and some PCs do not like their CPUs messed-with as per some of those settings.
My System SpecsSystem Spec
05 Jul 2012   #3

Windows 7 x64 Ultimate
 
 

In addition to what MAXSEVEN said, if you are doing any overclocking, stop. Also might try resetting everything to their defaults in the BIOS as something there might have gone fubar.

This /does/ seem like a hardware driver issue from your description. If the a core is at 100%, that means the CPU is at 25% and if nothing in the task manager shows anything using 25% of the cpu, then it is likely a ring 0 driver. Something that controls memory or the PCI bus, disk drive controller etc.

So either a driver is bad or some hardware is bad and causing a driver to have fits.

Memory is the easiest to test with memtest or by taking half of it out and seeing if it goes away, then swapping the other half. But before all that, definately make sure that your BIOS is not set to overclock anything, even by default (Some BIOSes come with an "Auto-Overclock" "feature" that is turned on by default that can cause all kinds of heck.) Set the BIOS for "Default for stability" if that option is available.
My System SpecsSystem Spec
.


05 Jul 2012   #4

windows 7 professional 64bit
 
 

alright, ill try that as soon as i can, just to clarify max. the computer after i clean installed windows does turn on. just half the time it will be extremely laggy when i turn it on and other times it will just perfectly fine for hours on end untill i turn it off. is there any program that can sort out drivers for you in case i might of missed some?
My System SpecsSystem Spec
06 Jul 2012   #5

Windows 7 Home Premium 64bit 6.1 Build 7601 (SP1)
 
 

Quote   Quote: Originally Posted by elliotcreighton View Post
alright, ill try that as soon as i can, just to clarify max. the computer after i clean installed windows does turn on. just half the time it will be extremely laggy when i turn it on and other times it will just perfectly fine for hours on end untill i turn it off. is there any program that can sort out drivers for you in case i might of missed some?
If you've not run MemTest I will say again--do that for sure!

Dunno what you mean by "sort out drivers for you"; you can use a program like Autoruns (Sysinternals) to examine and disable drivers manually, but you really must know what you are doing lest you render your PC unbootable.

Another nice tool I've used to at least ID processes that have loaded, in what order, and how long it took for them to load, is Startup Delayer (free from R2 Studios). You have to enable the Processes tab in that program, but it's shown me on more than one occasion some problematic programs.
My System SpecsSystem Spec
06 Jul 2012   #6

Windows 7 Home Premium 64 Bit
 
 

We can check if any drivers are missing or having problems:
  • Please upload your msinfo32.nfo file. To get this: Start Menu -> Type msinfo32 into the Search programs and files box -> When it opens, go to File, Save -> Save as msinfo32.nfo and save in a place you will remember -> Let it finish the process of gathering and saving the system info -> Right click the .nfo file, click send to compressed (zipped) folder -> Upload the .zip file here.

  • Please upload your msinfo32.txt file. To get this: Start Menu -> Type msinfo32 into the Search programs and files box -> When it opens, go to File, Export -> Save as msinfo32.txt and save in a place you will remember -> Let it finish the process of gathering and saving the system info -> Right click the .txt file, click send to compressed (zipped) folder -> Upload the .zip file here.
Do both of the above to provide us with the information in case one method does not work for us.
My System SpecsSystem Spec
08 Nov 2012   #7

Windows 7 Ultimate x64
 
 

I'm having this issue on my Asus 43SN laptop aswell.
Only, my problem occurs when the PC is running heavy processing (ie. Minecraft).
The first core keeps constantly working 100% after I have shut down all applications. The other cores run at normal load...
My System SpecsSystem Spec
04 Dec 2012   #8

Windows 7 Ultimate x64
 
 

Bump
My System SpecsSystem Spec
06 Dec 2012   #9

Windows 7 Ultimate x64
 
 

Bump
My System SpecsSystem Spec
06 Dec 2012   #10

Windows 7 Pro. 64/SP-1
 
 

Bumping is not a good thing.
You are posting on a very old thread. Please start a new thread and you will get a faster response.
My System SpecsSystem Spec
Reply

 CPU Core 1 - 100% other 7 cores 0-10% Freezes PC




Thread Tools



Similar help and support threads for2: CPU Core 1 - 100% other 7 cores 0-10% Freezes PC
Thread Forum
DXDIAG says that my intel core i3 has 4 cores General Discussion
bsod with 3 or more core but not 2 cores running BSOD Help and Support
Intel Gives Core i3, Core i5 Dual-Core Processors K0 Stepping Update News
Quad Core 2 Cores at dif temps Hardware & Devices
Quad core with three cores doing nothing Performance & Maintenance
Win 7 Touch Pack Rebound Freezes on Quad-Core CPU...... News
Quad Core- 3 Cores Disabled/Not working?? 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 10:21 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33