2007 MacBook high cpu crash

[Ih8reno]

Hi everyone

Somebody was purchasing my MacBook when he inputed some commands to make the computer use 100%cpu. It worked its way to 100 and then the message on screen showed to reboot the computer and that it has crashed. Is this normal because he said it wasn't.

 

[Altemose]

Hi everyone

Somebody was purchasing my MacBook when he inputed some commands to make the computer use 100%cpu. It worked its way to 100 and then the message on screen showed to reboot the computer and that it has crashed. Is this normal because he said it wasn't.

Normally, high CPU usage crashes are thermal issues. Does the MacBook appear exceptionally hot when this happens? What commands did he enter?

 

[Ih8reno]

2007 MacBook high cpu crash

Not 100% sure but it suddenly maxed out the processor. I had previously repasted the CPUs and thought I fixed the issue as this MacBook kept freezing in the past.

 

[Altemose]

Not 100% sure but it suddenly maxed out the processor. I had previously repasted the CPUs and thought I fixed the issue as this MacBook kept freezing in the past.

I would check the RAM as it seems like a more likely culprit. When executing tasks, both RAM and CPU are usually stressed and RAM exhibits these symptoms.

 

[Ih8reno]

Ram would freeze the mac also?

 

[Altemose]

Ram would freeze the mac also?

Big time!

 

[Ih8reno]

I put the original ram back in the machine when I was trying to sell it. Up to that point I was using other ram for personal use. I'm going to run memtest in single user mode and report back.

 

[Altemose]

I put the original ram back in the machine when I was trying to sell it. Up to that point I was using other ram for personal use. I'm going to run memtest in single user mode and report back.

Good idea!

 

[Ih8reno]

Well it passed (new ram) and I'm running the yes test in terminal which uses over 100% cpu, no issues thus far.

 

[Altemose]

Well it passed (new ram) and I'm running the yes test in terminal which uses over 100% cpu, no issues thus far.

Perhaps he was being a Slim Shady. Did he try to negotiate after the crash?

 

[Ih8reno]

Nope, said no thanks and walked away

 

[Altemose]

Nope, said no thanks and walked away

Try straining the CPU for a while...

 

[Ih8reno]

Try straining the CPU for a while...

Tried using the "yes" method and taxed the cpu for awhile until the fans were loud and then stopped it. Seems to work fine. This Macbook has been kicking my butt since I bought it!

 

[Altemose]

Tried using the "yes" method and taxed the cpu for awhile until the fans were loud and then stopped it. Seems to work fine. This Macbook has been kicking my butt since I bought it!

Does the CPU seem to be running too hot?

 

[Ih8reno]

Seems fine, here it is being stressed

And back at normal function

 

[charles6980]

Please use some real stress tests, such as the Mersenne prime search tool: http://www.mersenne.org/download/#stresstest

Regarding the age of your laptop, consider consulting http://ifixit.com to give it a good internal cleaning, including thermal paste replacement. (I did that on the search for an issue with my laptop, and I'm very happy I did it because the fan activates much more seldom than before.)