i7 2600K Recently Updated BIOS now Core 0 is 80% usage at idle

[lucasni]

Hello,

I recently updated the BIOS on my P8P67-M ASUS board from 0805 to 3701, after this when my overall CPU usage is at 10% idle, Core 0 is at around 80% usage in Task Manager. This is in Windows 7 64bit. Overall performance has about halved due to this. Any idea what is causing this?

Thanks,

Nick

 

[Pinhedd]

Windows measures processor idle time as the fraction of all time spent running the system idle process. If it's at 80% usage, there's something in the background that's running. Take a look at task manager and find out what it is.

 

[Tradesman1]

Might also run Malwarebytes and a virus scan - might have a bug

 

[lucasni]

Might also run Malwarebytes and a virus scan - might have a bug

I ran Malwarebytes in safe mode and no objects were found. I did a Full Virus Scan and nothing was found. Even in safe mode my CPU 0 is being tasked very hard. I do not see anything in task manager that is using my CPU. Only 2 GB of my 16GB of memory are actually being used. Any idea what is causing this?

 

[lucasni]

Might also run Malwarebytes and a virus scan - might have a bug

I ran Malwarebytes in safe mode and no objects were found. I did a Full Virus Scan and nothing was found. Even in safe mode my CPU 0 is being tasked very hard. I do not see anything in task manager that is using my CPU. Only 2 GB of my 16GB of memory are actually being used. Any idea what is causing this?

 

[Pinhedd]

Might also run Malwarebytes and a virus scan - might have a bug

I ran Malwarebytes in safe mode and no objects were found. I did a Full Virus Scan and nothing was found. Even in safe mode my CPU 0 is being tasked very hard. I do not see anything in task manager that is using my CPU. Only 2 GB of my 16GB of memory are actually being used. Any idea what is causing this?

If you see nothing at all then it's probably a driver. I suggest doing a full reinstall, it'll be faster than trying to figure out what's wrong.

 

[lucasni]

Reinstalled windows 7 64 ultimate. CPU 0 is still at 80% while nothing is running.

 

[Tradesman1]

Nothing in Task Manager under processes or applications appear to be doing much

 

[lucasni]

In this fresh install, almost no processes are running.

 

[Pinhedd]

Reinstalled windows 7 64 ultimate. CPU 0 is still at 80% while nothing is running.

please post a screenshot showing it running at 80%

 

[lucasni]

After downgrading the BIOS a couple times, things appear to be back to normal. Thanks for the help.