One notebook core 'disappeared' - Super User most recent 30 from superuser.com 2010-03-21T02:16:54Z http://superuser.com/feeds/question/75731 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://superuser.com/questions/75731/one-notebook-core-disappeared 0 One notebook core 'disappeared' Yossarian http://superuser.com/users/14157 2009-11-26T22:18:19Z 2010-01-31T14:19:31Z <p>Hello, I've got Acer Aspire 5100, which, as in specifications, had once dual-cored processor. But now, one of the cores has mysteriously disappeared, and I'm not sure why (the processor now reports itself as AMD Turion MK-36. Also the Task Manager displays only one 'CPU Usage' graph (it showed two).</p> <p>My wifi just stopped working (I dont bother, i've bought external and that malfunctioning took out), so there can be one reason for both of these problems.</p> <p>Is there any way how to get my core back? The notebook with only one core is junk. Thanks. (OS Vista)</p> http://superuser.com/questions/75731/one-notebook-core-disappeared/75914#75914 1 Answer by JumpingPA for One notebook core 'disappeared' JumpingPA http://superuser.com/users/14631 2009-11-27T11:25:22Z 2009-11-27T11:25:22Z <p>Are sure that your NB contains a MK-36... It's a single core CPU- so no wonder why only one core is reported.<BR> Did you do a BIOS update?<BR> If you are paranoid you should check, whether it's really your NB...<BR></p> http://superuser.com/questions/75731/one-notebook-core-disappeared/102935#102935 1 Answer by CarlF for One notebook core 'disappeared' CarlF http://superuser.com/users/11550 2010-01-31T14:19:31Z 2010-01-31T14:19:31Z <p>A fairly standard answer from me: download and boot a Knoppix CD. If Knoppix sees both CPUs you know it's a software problem with Vista. If not, it's a hardware problem and probably unfixable. I agree with shf301 that the only reasonable explanation is that you switched laptops with someone else without realizing it.</p>