I can go to the task site and find that my CPU is at 100% usage when I have not been on the machine for hours and nothing is open. What could possibly be causing this to happen

Type "msconfig" on search bar there will be bar "startup apps" click that and click on disable all and restart your system...hope it works... Regards: imran

you have to get safe mode if you have win xp /7 .also need to check malware and remove unwanted start up programs.

In Task Manager, go to the Processes tab and sort by the CPU column. See what is hogging up all your CPU. It may be a virus, if so, I recommend downloading Malware Bytes and doing a full scan. Warning, it could take several hours to scan depending on the size of your machine. Good luck!

Try opening task manager then in the 'processes' tab you can see what is using your cpu. That should help troubleshoot the problem.

go to bios see if the cpu cap is off or on also go to system in computer and adjust all index options can also try cpu usage controls in control panel

Check what programs are taking up the most CPU resources, i.e. invoke the Windows Task Manager (use Ctrl + Shift + Escape or Ctrl + Alt + Delete, or simply right click on the Task Bar and select the option).

Look on the Processes page tab and click on the CPU column heading to order the usage by the maximum to minimum, then watch to see what is taking the most resources.

It sounds like there could be a virus on your computer that is using up all of your CPU resources. Try to monitor the processes and CPU usage, buy pushing Ctrl + Alt + Del at the same time. This will open up the Task Manager on XP, or show you a menu screen on Windows Vista and 7, and you can click on start task manager at the bottom. View all your processes and how much cpu usage is being taken up from those processes. Look for the process using the highest cpu usage when it spikes to 100% and please repost the process name!

In the mean time might I suggest running and anti-virus scan, scanning for malware, and spyware as well. If you do not have any of these programs, I would suggest using either AVG, or Avira Anti-Virus, Malwarebytes, and Super Anti-Spyware, all of which are free programs that can be downloaded here!

Copy and paste the links into your browsers address bar...

AVG-- http://www.filehippo.com/download_avg_antivirus_32/

Avira-- http://www.filehippo.com/download_antivir/

Malwarebytes-- http://www.filehippo.com/download_malwarebytes_anti_malware/

Super Anti Spyware-- http://www.filehippo.com/download_superantispyware/

it because 100 % of cpu usage so open task manager and see the processes which is using high cpu memory and end it

Hi,

Try to monitor the CPU usage before opening CROME. If it is normal before opening it then there is some process under CROME which takes you CPU usage report to GOOGLE on this. and remove it through Add/Remove programmes under control panel.

Try to use Firefox instead of CROME.

If it happens again then there is some thing wrong with OS( most probabaly Spyware or trozen).

I'd say it has NOTHING to do with how or when you access Yahoo. In fact, anytime you see an extreme jump in CPU usage like yours....you have to consider that you may very well have a TROJAN VIRUS that's hogging up all your memory (among other things viruses do). If you don't have a good anti-virus program, then get one fast. Update all virus definitions, then.......RUN a FULL scan on your pc or laptop! Watch what you find.