Why does the CPU usage reach 100% when laptop is plugged in?

Posted by Mayank on Super User See other posts from Super User or by Mayank
Published on 2012-03-19T03:04:10Z Indexed on 2012/12/17 11:05 UTC
Read the original article Hit count: 225

Filed under:

hp

|

cpu-usage

I have an HP Elitebook 8440p with Windows 7 Ultimate, i7 Processor and 8 GB RAM.

For the last couple of days, when I plug-in my laptop for charging, the CPU usage shoots up to 100% and remains there for around 15 minutes. No offending process shows up in Task Manager/Process Explorer but the laptop is practically unusable for that time. The CPU usage becomes normal when I remove the power cord but shoots up again when plugged back. This is happening with different power adapters/wall sockets so it might not be a faulty adapter issue.

Why is this happening and any pointer to resolve this issue?

© Super User or respective owner

Related posts about hp

/usr/lib/cups/backend/hp has failed with an HP LaserJet p3005

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Ever since 10.04, I can't print to an HP laserjet p3005. I'm even using an entirely different computer now with a fresh install of 10.10. I've tried with and without the latest hplip. Recently, sometimes I can get it to print a few things, but eventually it always fails (usually when printing a… >>> More
/usr/lib/cups/backend/hp has failed with an HP LaserJet p3005

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Ever since 10.04, I can't print to an HP laserjet p3005. I'm even using an entirely different computer now with a fresh install of 10.10. I've tried with and without the latest hplip. Recently, sometimes I can get it to print a few things, but eventually it always fails (usually when printing a… >>> More
HP PDX Laptop and blu-ray region, HP MediaSmart problem

as seen on Super User - Search for 'Super User'
I have a laptop here, a HP HDX 16 EO1000 with a Blu-Ray drive. Installed on the machine is a software package called HP MediaSmart, which presumably can play Blu-Ray movies. However, when inserting a BD disk and starting HP MediaSmart, it comes up with a warning screen and the following message: … >>> More
Ubuntu 14.04:LTS , HPLIP loses USB connection to HP laserjet

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
This is my first post, so please let me know if i have inadvertanly broken any rules. Problem There seems to be a problem with HPLIP and USB connections in ubuntu 14.04LTS. After upgrading i managed to get the printing to work but today it has broken. Initial Issue (Solved) After upgrading to… >>> More
Getting hp-snmp-agents on HP ProLiant DL360 on Lenny working

as seen on Server Fault - Search for 'Server Fault'
After receiving our HP ProLiant DL360 I'd like to integrate the machine into our Munin system and thus enable ProLiant specific information to be exposed via SNMP. I'm running Debian Lenny with kernel 2.6.26-2-vserver-amd64 . I've followed http://downloads.linux.hp.com/SDR/getting_started.html and… >>> More

Related posts about cpu-usage

debugging JBoss 100% CPU usage

as seen on Stack Overflow - Search for 'Stack Overflow'
Originally posted on Server Fault, where it was suggested this question might better asked here. We are using JBoss to run two of our WARs. One is our web app, the other is our web service. The web app accesses a database on another machine and makes requests to the web service. The web service makes… >>> More
Very High Interrupt CPU usage in Win2k3 VM on vSphere

as seen on Server Fault - Search for 'Server Fault'
Hi, I've been testing some software in a server virtual environment and I've noticed I get a huge amount of CPU usage on the Interrupts process. My question is, how does this relate to the virtual hardware platform as the rate is allot lower in a real system. Some how the hypervizor scheduler works… >>> More
VirtualBox CPU usage 100% on host

as seen on Super User - Search for 'Super User'
I have installed VirtualBox 3.1.2 (latest) on my Windows 7 (x64). In the VirtualBox I've installed Windows 7 (x64). I have 4 GB RAM installed. The guest has been assigned a 1536 MB RAM. Sometimes the CPU usage on the host goes 100%. It happens everytime, in a few minutes, after starting the guest… >>> More
SQL Server 2005 running at 97% CPU usage

as seen on Server Fault - Search for 'Server Fault'
How can I findout which statements are using the CPU? >>> More
debugging JBoss 100% CPU usage

as seen on Server Fault - Search for 'Server Fault'
We are using JBoss to run two of our WARs. One is our web app, the other is our web service. The web app accesses a database on another machine and makes requests to the web service. The web service makes JMS requests to other machines, aggregates the data, and returns it. At our biggest client,… >>> More