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Started this morning to have 100% CPU on Windows 8.1, but without any process that causes it (at least in task manager)
Tried several fixes, like disabling the maintenance services, the anti-malware service, and even the windows defender. Nothing helps.
In addition, Normal reboot and even booting to safe mode still produces the same problem.
Malwarebytes Anti-malware does not find anything.
If I look at the task manager, anything running will consume full CPU cores, regardless of what the process is doing, and if nothing is being run, I get 100% CPU with all processes marked at 0.
UPDATE: Using msconfig to disable non-vital services on next boot provides good results, but doing normal boot followed by stopping all services that can be stopped does not. The only two directions now are: Disabling one service at a time and rebooting, or clean install of windows. Neither seems pleasant.
2nd UPDATE: I gave up and decided to upgrade to Win10 to see if that solves it. Guess what, it didn't. Finally did a clean install, and only then I got rid of this $#17. Thanks to anyone who tried to help.
Photon
Posted 2015-08-13T07:44:14.520
Reputation: 111
Please specify the type of your CPU and Motherpoard. – Shapperd – 2015-08-13T07:51:11.163
It's an Alienware 14 laptop, so I'm not sure which motherboard, but the CPU is a Core i7 4900MQ @ 2.8GHz – Photon – 2015-08-13T07:53:01.603
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Maybe you can try this app, it gives more detailed information aout what is happening in your computer :)
Added image of both task manager and process explorer. They seem to be conflicting. Unfortunately, the fan and the battery usage agree with the task manager and not the process explorer. – Photon – 2015-08-13T08:10:44.930
If we stay at the built-in process explorer (i'm suprised about processexps faliure ... ) it shows firefox.. Have you tried disabling plugins, themes anything you can? – Shapperd – 2015-08-13T08:15:18.887
It's not a firefox specific problem. Any foreground program I start displays the same CPU consumption pattern. – Photon – 2015-08-13T08:24:04.313
Let us continue this discussion in chat.
– Shapperd – 2015-08-13T08:27:50.067capture a xperf trace of the high CPU usage: http://pastebin.com/pgE11HRD and share the file
– magicandre1981 – 2015-08-13T18:35:45.267https://dl.dropboxusercontent.com/u/20902286/HighCPUUsage.7z – Photon – 2015-08-14T04:44:39.497
I can't see any high CPU usage only a bit from Firefox. Run it when have the high CPU usage and also notifiy me about your reply with "@my username". – magicandre1981 – 2015-08-17T16:11:40.983
@magicandre1981 Never mind. I gave up and did a clean install of Windows. – Photon – 2015-08-17T17:52:30.530