I searched a lot about this online and couldn't find a solution, I turned off fast startup as many answers have suggested. But it didn't work , The problem happened after I connected a secondary hard drive to my laptop removing the dvd drive , whenever I remove the secondary hard drive , above processes act normal. I have a SSD as my primary drive , the problem happens only when the secondary drive is connected , I desperately need a solution since this is killing my computer.
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This is a known issue. To use a hdd in the DVD slot, you used a HDD caddy. In some cases you get a high CPU usage caused by the ACPI.sys driver.
You have to look if your caddy has a jumper and if yes, change the position of the jumper.
This fixes the CPU usage. If you don't have a jumper, buy a caddy which has such a jumper.
magicandre1981
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1Totally fixed the issue instantly! Thank you very much , we need more people like you in this planet. :-) – lasan Dec 03 '16 at 09:07
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But what does the jumper do, technically? – u1686_grawity Dec 03 '16 at 20:53
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@grawity I'm guess, to make it master or slave drive ? – lasan Dec 04 '16 at 06:17
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3@grawity this "Device Attention" pin which is used in Win8 for some purpose: https://msdn.microsoft.com/en-us/library/windows/hardware/dn614034(v=vs.85).aspx . I thinl the jumper just turns this off – magicandre1981 Dec 04 '16 at 07:27
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2@lasan That does not exist in SATA. – u1686_grawity Dec 04 '16 at 08:52