Laptop Showing 100% CPU Usage / Getting Very Slow?
Mar 29, 2008
I recently allowed someone use of my laptop to access their Yahoo email over a dial-up connection. When I next used the laptop myself, the desktop had re-arranged to the default top left screen configuration and the laptop was noticeably slower in operation. It now appears to operate at 100% CPU usage, whatever programme I attempt to run. I have run Spybot (nothing detected). According to the "user" they did nothing but read their email and did not download anything (that they were aware of).
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Apr 26, 2006
i know this has been posted before but none of the solutions have worked for me. i have a toshiba satellite laptop. it started running extremely slow and the cpu usage is at 100% all the time. i reformatted and reinstalled windows xp but that didn't solve the problem. i noticed when i was reinstalling windows xp, it was going slowly as it did before, and i hadn't even started up windows yet. when i would click the next button when installing it would do the same slow lagging thing. i tried everything when i did start windows too. i tried deleting the explorer.exe process and retyping it in
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Jun 27, 2005
My PC is running superslow. Task manager shows that explorer.exe is using up to 99% of CPU usage- even though I have no programmes running.
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Nov 5, 2006
My laptop recently became extremely slow. The CPU usage is barely ever under 94-100% when any programs are running. I was wondering if you could help me find out what is wrong with it
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Feb 25, 2007
Recently my laptop has been running very slowly and I've noticed that the cpu usage is usually at 100%, even when most of the more memory intensive programs such as firefox and azureus are closed. Is this a problem with most lenovo laptops? I have a thinkpad T43p.
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Sep 4, 2006
My laptop is running very slow and has been showing signs of hijacks. I have run Ad Aware and also Avast Virus Checker. I have Avast and AVG, Spyguard, Zone Alarm running and on my other machine running the same programs have no problems.
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May 27, 2007
My CPU Usage always shows 100% and my system is getting very slow although I have not installed any big software and have strong antivirus (symantec) whose definition files are updated .So , why is it happening?
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Nov 1, 2007
My friend, who has given a Dell Optiplex GX240 running Win2K Pro. 512MB RAM To help her out, I got rid of porn, viruses, and spyware using: Ad-Aware, AVG spyware and AV free versions, Trend Micro House Call, Spybot I checked the task manager, and has constant 100% CPU usage, avg memory usage The system runs, but apps open slow, so I tried some freeware reg cleaners: CCleaner, Eusing Free Registry Cleaner, Wise Registry cleaner.
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Mar 27, 2007
checked windows task manager...it appears to be svchost.exe (not svchosts.exe). Is this a virus or spyware because i have 3 different ones on system?
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May 3, 2006
When using AOL Broadband the computer slows down and sometimes takes several seconds to refresh a page.I happened to open the Task Managerand two things came to light:I cannot get the complete Task Manager panel...It only shows TASK and STATUS..it used to show lots more.Also,and this is my problem,it shows CPU USAGE 100%.If I close AOL and go back online it is ok for a while and then starts to slow down to a crawl.
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May 29, 2007
I am running xp sp2 the cpu usage is 100 % and pc locks up for about half an hour after boot up the the cpu usage drops to normal. I found sdfix on this site and ran it here is the report i got
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Dec 15, 2006
Ive been having problems with my desktop computer. If you open up any program, the CPU usage immeaditely goes from like 0 to 100% and occassionally it will shut down and restart. Such times are when I try to run ad-aware or AVG. It will shoot up to 100%, maybe run for a minute then restart the computer. I cant even delete some files because it just restarts before they delete. So, I tried to do a restore since the last time ive been home when it was working good, about a month ago and it did nothing.
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Jun 24, 2005
task manager shows 19 processes at start up with nothing open. this isn't normal is it?
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Apr 13, 2008
My CPU usage always reach top! Sometimes 30-50..
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May 9, 2007
when computer is at 100% cpu, I experience very slow performance.I don't know how to lower it down.It sometimes shoot up to 100% then go down and shoot up again.
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Sep 23, 2006
I noticed my laptop lagging a lot. I checked the CPU usage, and it was constantly at 100%. After retstart and shutdown, the cpu usage would never go lower than 100%. I did a system restore to a week ago when I did not have this problem, but this did not help. Did a spyware scan with Spybot and Ad Aware, again no help. Did a virus scan with TrendMicro, no help again.
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Jan 15, 2008
My problem is extremely slow performance, and taskmanager shows 95-100% cpu consumption almost all of the time. Even as I type in this textbox the system is lagging. I've used Spybots S&D,
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Oct 5, 2005
My computer started running extremely slow. When I check the task manager it notes that the CPU usage is spiked at 100%. I checked to see what is using most of the CPU and its "explorer.exe" using about 99%.
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Oct 24, 2007
my computer is really slow..my cpu usage reaches 100% i tried borrowing my girlfriend's laptop and used it here at my house..it was running good when she was using it in her place..when i used it here it my place it became slow too and had a 100 cpu usage too,,what should i do? is it my internet provider thats causing these troubles? when im not connected to the internet i dont have these problems.
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Sep 18, 2006
I bought this new computer about 6 months ago and up till now no problems. I have Windows XP and now Internet usage is running ver very slow. It seems the green line on bottom takes for ever to go across. I know I only have dial up service (I know my son says i need cable but i don't want to spend any more money on Internet) but it has never run this slow before.
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May 1, 2007
I am using windows xp pro with a 2.00ghz celeron cpu I also have 2gb of ram, lately my pc seems to be slow and explorer keeps crashing causing the desktop to reload if i look in task manager my cpu is almost always at 100% I have done a virus and spywear check but that found nothing
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Mar 13, 2008
Recently found my computer running very slow almost stopped, not able to perform any function. Through task manager found CPU running at a steady 100%. Ran Hijackthis, spybot, and updated and ran antivirus - with no problems found. started in safe mode and CPU usage was at 1%. Working through msconfig i started turning services off untill i found culprit. The plug and play service is causing my problem with the CPU, but I don't know how to fix it.
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Oct 9, 2009
First Post I have a Dell Latitude 810 XP Pro (SP3) 2 meg ram...about 50% HD unusedI have a problem with the CPU useage staying at (100%)even when I close all apps. The Windows Task Manager shows "scvhost.exe System100%" As long as I uninstall Norton I can get some e-mail response but really slow.I spent time yesterday with Dell "pay as you need" they had me run a Malware program (found five culprits) and a Spyware program (found 80 cookies)...took a lot of apps off my start menu...had me go to SP3...had me go to IE8. When done the Widows Task Manager showed appropriate low use % and all worked fine.
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Dec 11, 2004
Several weeks ago, we had a blackout. When I rebooted my PC, everything was slow. Programs, internet, everything. Looked all over the web for a solution but found nothing. Wound up reinstalling Windows, and the PC was running like new again. Two days after the reinstall, we had another blackout, and I'm right back to where I was before. I've scanned for spyware, defragged the drive. I'm a novice, so I'm not really sure what else can be checked.
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Mar 5, 2007
Could someone please take a look at my HJT log. My CPU went up to 100% about ten minutes ago and hasn't dropped since. I didn't see any odd processes and I just restarted and it just jumped right back up to 100.
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Jul 9, 2009
I have a laptop operating on Windows XP. Recently my computer has become extremely slow. I have gone into task manager and noticed that the CPU usage is quite high, even when there is very little running. At times the system idle will hover in the 90% range, however the CPU usage will also stay in the same range. (As far as I know, if idle is at 90%, than CPU usage should not be higher than 10%). I can't figure out what else is running that is making the CPU usage run so high. I have run various virus and spyware tests and all have come out clean. I have used cc cleaner to clean my registry and even update some of my out of date drivers but the problem has continued.
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Jan 4, 2010
I must use the Task Master to help me to get out of a program that has locked up on me. My PC is very slow now anyway and the Task Master CU usage always shows 100% even though I may not be running any program.
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Oct 14, 2008
my computer running extremly slow and all the times task manager shows CPU usage at 100%
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Sep 17, 2005
I am having a problem on my xp pro machine my computer is very laggy and when I go into task mamagment with crtl-alt-delete it should cpu resource usage 99% it's not suppose to be this can
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Jun 26, 2009
I have windows xp And its running slow , i have just done a system restore, and its still running slow. I have just noticed that In windows task manager,in performance its saying that the cpu usage is 100% when i have nothing running.
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Dec 12, 2005
Anyhow, on my second laptop, my roommate borrowed it and of course has no idea what she could've possibly ever done. She's probably a lil' too dense to realize if she download or got some kind of virus using it. And, of course, she didn't bother telling me right away so when I went to start up the laptop one day, it was going extremely slow.It took about 10 minutes for the laptop to boot to the windows login screen. Any mouse movement whether on the mousepad or when I hook up my USB mouse takes about 1 minute to register any movement. I haven't even been able to get to the main desktop screen. (I'm trying as I type.. but, judging by the length of how long it took the other stuff, I could be in for a long wait.) Even when I typed in the password it took about 5 minutes for it to seemingly type out.. but the "dots" cut off so I have no idea if it actually will go through or not or if I will get the "incorrect password" error message.
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