Windows 8


Background Information / Computer Specs

I have a 14-inch Samsung Series 5 Ultra. Bộ vi xử lý core i5 CPU, 750GB HDD, 8GB RAM, hãng intel HD Graphics 4000. I"ve had the computer for about 1.5 years with no major problems.

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The issue appeared at the beginning of April this year, when I updated the OS from Windows 8.1 to lớn Windows 8.1 Update 1 (not from 8 to 8.1). After being on continually (except for at night, when I put it on sleep mode) for about 48 hours, the disk usage as seen by Task Manager hits 100%. When this happens, everything from opening/closing applications khổng lồ typing and even bringing up the start screen by pressing the Windows key becomes extremely slow. The only way lớn make the disk usage decrease is to lớn restart the computer. Then the problem repeats. I"ve used my current máy tính xách tay (as well as my previous laptops) this way -- putting it on sleep mode at night & restarting it only when Windows needs khổng lồ install updates -- for a long time. So I know the 100% disk usage is not due to the way I use the computer.

The thing that causes the spike varies. Sometimes it"s System, sometimes it"s one of the various applications I installed (e.g. Chrome, Evernote, Spotify, Wunderlist, iTunes, etc.), và sometimes it"s Antimalware Service Executable, etc.

Attempted Solutions

I think I tried almost every solution out there for this problem:

Running the check disk command (chkdsk /b /f /v /scan c:) from Admin Command PromptRunning Windows Memory DiagnosticDisabling Superfetch và Windows tìm kiếm from services.mscRunning "Fix problems with Windows Update" from Control Panel --> TroubleshootingUpdating and rolling back the graphics driver (Intel HD 4000)Disabling "Use hardware acceleration when available" from Chrome settingsDisabling hãng sản xuất intel Rapid Storage TechnologyRunning a quick scan & a full scan from Windows Defender (no threats found)Taking the hard drive out và putting it backRefreshing the computer, from the Update và recovery --> Recovery option in Windows settings

NONE of the above worked for me. I was about to lớn give up but then noticed that one of the main culprits of the disk usage spike, as shown in the "Disk Activity" section of the Resource Monitor, was C:System (pagefile.sys). I googled around & found that one of the recommended solutions was khổng lồ disable pagefile. I then went to lớn Control Panel --> System & Security --> System --> Advanced system settings --> Advanced tab --> Performance settings --> Advanced tab --> "Change" under Virtual memory and discovered that the number for "Currently allocated" at the bottom was 1280MB, although the number for "Recommended" was 4533MB. I immediately changed it khổng lồ 4533MB và checked my family members" computers to lớn see what the numbers were like. All of theirs had a currently allocated space that was only slightly smaller than the recommended space. See screenshot below:


This might fix the problem. I"ll have to wait a couple more days.But if it doesn"t, what in the world should I vày next? I"m guessing the hard drive isn"t failing because

This computer is less than 2 years old; andSpeccy says that the status of the HDD is good.

The "4533MB" solution did not work. I had to lớn reboot the computer about 30 minutes ago because the disk usage again hit 100%. When I opened Resource Monitor the C:System (pagefile.sys) again was shown to lớn be the culprit. I have now disabled pagefile entirely via the same window shown above in the screenshot. The number for "currently allocated" is now 0MB. Will update again in a couple days, or if the problem occurs again, whichever comes sooner.

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So, between 5/27 và 5/30 I had lớn restart my computer for reasons related to lớn various updates for third-party applications. I used my máy tính (unplugged; on battery) on the night of 5/30 & then put it to lớn sleep mode over night. When I woke up on 6/1 & pressed the power button, it first seemed like it was resuming from sleep but then rebooted the computer. This morning, the computer rebooted again. I guess disabling pagefile entirely took a toll on my RAM? I don"t really know how to lớn interpret this. For now I"ve enabled pagefile again.

I think I figured out the source of the problem - it"s Superfetch. I think it has been Superfetch the whole time. It"s true that I did include "disabling superfetch" from services.msc in the "tried solutions" danh sách above. What I didn"t realize at the time was that Superfetch restarts itself automatically shortly after I turn it off and disable it. So, the question I now have is: how vày I permanently disable Superfetch?

I think I figured it out. It probably was Superfetch the whole time. On the night of 6/5, after being on continually for a day, the disk usage started to spike again. I went lớn services.msc & stopped & disabled Superfetch. The disk usage got restored. About an hour later, I reopened services.msc, checked the status of Superfetch, và found that it was enabled again. I did this "disable-it-and-it-got-enabled-again" thing at least 8 more times, lớn no avail. I then googled "how to lớn disable Superfetch permanently", và tried disabling Superfetch via 1) the administrator command prompt; 2) the registry; 3) services.msc, but nothing worked.

Then I went to this webpage và tried the "Disable Prefetch" option in the registry. I phối both EnablePrefetcher and EnableSuperfetch khổng lồ have the value data of 0. Superfetch was still running, but 3 days after I did this, my laptop has not seen a single disk spike. I put it to lớn sleep mode overnight, và it did not force-restart in the morning.

For those of you having the same problem, please try the "Disable Prefetch" option as described on the webpage.