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[SOLVED] Superfetch...

Q: [SOLVED] Superfetch...

First off, I'd like to say I don't definitely register the Superfetch service as the problem, it just seems that way from what's happened so far.
I've posted around this site twice on my problems, all 2 other posts have the same symptoms, and the solutions given have eased my problems somewhat, but not entirely, I've narrowed it down to the OS software itself causing my problems... I think.
I have had, for about a month, been having problems with a svchost process, it runs around 100000K all the time, I attached a pic of it in task manager (which I've been using far too much!). It runs like that with superfetch enabled, and goes to about 10000 when SuperFetch is disabled. Now, I know this might be normal, I mean superfetch is designed to keep loads of crap stored away so I can retrieve it faster, but when I have SuperF enabled and I run Firefox, IE, a game, a Microsoft Office program; it freezes worse than an Eskimo in bathers... Recently also, something, something stupid, has been making Win7 unable to launch correctly at startup, which triggers startup repair on next manual boot. Startup repir then launches System restore and reboots, which fixes it, until a few days later :S. This though, may be caused by my automatic sleep setting, It's set to snooze after 2 hours, and I go out for longer than that. And when I come back I expect it to be able to wake-up after I press a key, instead I have to press power and it launches into the failed startup thing I just ran through. And once it starts up correctly it says 'windows recovered from an unexpected shutdown'. Speaking of which, even without superfetch enabled logging on takes over 5 min, as in, it gets to desktop, I open a few programs, it goes AGGGGGGGGGHHHHHHHHHHHHHHHHHHHH and freezes. often provoking a message "Microsoft Windows"'This program is not responding, click now to end process or cancel to wait for the program to respond', or something like that. I learned after the first time to never hit the "end process" button :S
Also, a short time ago, when I had superfetch on, cod4 would "stop working" and windows would make me force-exit it, even though I could hear the bullets penetrating my sim-skin.

I will edit, if I remember anything else, but that's all I can think up without rage-smashing my screen. My computers been having problems since I got it 3 months ago, and I can see the light at the end of the tunnel, if I can get this to stop happening I will be happier than a pig in slightly fermented slop!

Thanks if you can help!! :D

EDIT: forgot the pic

Preferred Solution: [SOLVED] Superfetch...

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: [SOLVED] Superfetch...

If your having that much trouble use the warranty and return to manufacture and have them fix it.
If you have 2GB or RAM or less, you could improve overall system performance by disabling the SuperFetch service. SuperFetch can be a way to increase your system performance, but right now it doesn't help the average user.

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Just need to know if I should disable it?

Toshiba Satellite 1415-s173

Windows 7 RC ultimate 32 bit/Windows XP Professional 32bit

Processor-Mobile Intel Celeron 1.80GHz
Virtual Memory-1024MB
Hard Drive-30GB Hitachi_DK23DA
Graphics Card-16MB NVIDIA GeForce4 420 GO

A:Solved: Superfetch

Two schools of thought.
Personally with anything less than 2.0Gb memory I would disable it.
With your machine specs, it needs to be running as little as possible.

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I usually try to offer help, on this forum, whenever I am competent to do so. I visit several such forums, but have a lot of repect for some of the "boffins" who live here. So I want to throw a coal on the fire for the experts. We know, to different degrees of understanding, what defragging does. It appears to me that Superfetch would tend to turn this process around again, obviating its use. Perhaps I should contact, say Seagate for an opinion?
Any comments.

A:Solved: Defragging and Superfetch.

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Hi, i have an issue with my Lenovo K450 rusning Win 8.1 64 bit.
It has the 100% disk usage bug and when i disable Superfetch in Services and reboot, it shows me that Superfetch is disabled but it still runs?
When i try to stop it, it gives me error 1053, and I cannot stop it.

Any help would be nice, thanks.

A:Solved: Superfetch disabled but still runs


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Do you guys know what does this process actually do? I can see it eats more than 120 mb of my RAM. I did a google search but still am not sure whether it's safe to stop it or not.

A:Solved: SysMain(superfetch) process

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Recently I've noticed that an instance of the process svchost.exe is eating up quite a chunk of memory (working set private) and I'm not entirely sure what for. Not that it's a problem for me, considering I have 8GB of RAM to play with, it's just a bit puzzling for me hence my curiosity as to why this happens. Please refer to the below links to some screenshots I took for reference (showing Process Explorer), with a brief explanation for each:

Screenshot 1:
This was taken just moments after logging into Windows, to show how much memory was initially being used. The instance in question is using 102,052 K.

Screenshot 2:
This was around 30 mins or so after the first screenshot, having been left idle for the entire duration. This time the same instance is using 143,712 K, which give or take a few thousand K is what it appears to settle down to after a while.

Please refer to the 'My System' link under my profile for my hardware specifications. If you want more info on the software I use please don't hesitate to ask. Hope this helps.



A:[SOLVED] svchost.exe - unusual activity [ Superfetch ]

Hi -

SysInternals Process Explorer by Mark Russinovich, Microsoft TechNet -- Nice!

The svchost is question - PID = 1104
- 102 MB = screenshot #1
- 144 MB = screenshot #2

Hover the mouse over the svchost in Process Explorer and you should see the list of system services appear like this -

Now, 2x-click on the svchost 1104, click on the "services" tab and you'll see this -

Click on sysmain - Superfetch. Then click on "Stop" - lower-right of screen.

Close the small services screen and go back to Process Explorer. What is the private pool usage for PID 1104 now?

Please note that if you have logged off/ re-booted since your screenshots, the PID will have changed.

If I am right about the system services included in your svchost 1104, you can expect to see it increase as your logon session continues, usually capping under 200 MB.

Regards. . .



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Hi, can someone please tell me if it is advisable to disable superfetch??, and if so, will it improve overall performance?
Thank You


Hello Rip,

I would not advise to disable Superfetch. It is designed to help improve your computer's performance when enabled. However, you can do a test by seeing how your computer runs with it disabled and enabled just for fun. It will not hurt anything to test.

Superfetch (Memory Prefetcher)


Superfetch - Change Preload Data

Hope this helps,

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I have 6 gigs of Memory. But my system keeps caching all of what is not being used. Should I change the parameter, in the registry, from 3 to something else? I don't want to turn it off completly, and I understand a parameter of 1 would be best.

It seems that my system slows down when it has to go to the cache to find memory for an application. I would think that some memory should be available when launching a program for faster response.

Please advise. Should I fool with it?

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When I starts my comp it's activity keeps running for about 3 mins.Is this Superfetch running?Can this be set to manual or should I leave it alone?(I'm kinda new to Vista)!


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Is there a way to make superfetch only "fetch" applications and not the entire movie I watched the other day?


Why would you want to do that? Maybe you have the wrong understanding of what Superfetch does. May I suggest this article: SuperFetch: How it Works & Myths

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I've discovered what it is.


Windows SuperFetch enables programs and files to load much faster than they would on Windows XP–based PCs.

When you're not actively using your computer, background tasks—including automatic backup programs and antivirus scans—run when they will least disturb you. These background tasks can take up system memory space that your programs had been using. On Windows XP–based PCs, this can slow progress to a crawl when you attempt to resume work.

SuperFetch monitors which applications you use the most and preloads these into your system memory so they'll be ready when you need them. Windows Vista also runs background programs, like disk defragmenting and Windows Defender, at low priority so that they can do their job but your work always comes first."

But why does it keep failing? It is helping me in no way at all when it just goes, and I have to reboot. Meh.

Oh. Merry xmas everyone. (:

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A few weeks ago, my computer starting getting an error message saying that 'superfetch is disabled' and suggesting I check online for a solution to fix it. It only appears when I first switch on the computer. After about half an hour of surfing it doesn't appear. The computer is taking ages to boot up and the internet browser page keeps 'twitching and jumping'. I don't know how else to best describe it. I use Firefox as my browser generally, but the same thing happens with Internet Explorer. I'd never heard of 'Superfetch' until recently and don't know what it does when its working. I'm not great when it comes to computers. Any advice would be really helpful. I've had the computer for about 2 and a half years. I've run CCleaner to clear out something (not too sure what). No problems with virus or malware at all.

Tech Support Guy System Info Utility version
OS Version: Microsoft® Windows Vista™ Home Premium, Service Pack 2, 32 bit
Processor: Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz, x64 Family 6 Model 23 Stepping 10
Processor Count: 2
RAM: 3060 Mb
Graphics Card: Intel(R) G33/G31 Express Chipset Family, 320 Mb
Hard Drives: C: Total - 289820 MB, Free - 118419 MB; D: Total - 15359 MB, Free - 8899 MB;
Motherboard: Dell Inc., 0N826N
Antivirus: AVG Anti-Virus Free Edition 2012, Updated and Enabled


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Hi folks, hope this is finding y'all well.

Got a quickie regarding Vista's feature called SuperFetch. From what I understand it is designed to prepare maintenance tasks to be run during idle CPU times.

Why would this service automatically shut itself down, or error out? If Vista is supposed to be "self-healing", then how is it that this native Vista feature can't figure out how to keep itself alive?

Further, does this feature erroring out have any impact on other elements (memory management, buffering, file extension recognition, etc)? Every once in a while I have to reboot in order to be able to re-activate the right-click features in the explorers.

Looking forward to your feedbacks!


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I'm running XP Ultimate and went in to turn on superfetch after learning of it in a conference I was in today and I can't find it anywhere...can someone steer me in the right direction please?



A:Where is Superfetch?

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Hi, is it ok to disable the superfetch in vista?,and will it make any difference to the system?,just that I keep getting error messages saying that it has stopped working,when browsing within firefox, so I might disable it??,any ideas?, I checked the error reports, but nothing helps.Thanks Rip


I disabled it as soon as I got my machine. The disk clatter drove me crazy. You may see some performance degradation on start up depending on hardware and working set. I never did see any,

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Does anyone know how to get rid of 'superfetch' which seems to affect my wireless starting on my laptop. The link to it is Microsoft Online Crash Analysis. Eveytime i start up this notice comes up to say 'superfetch has stopped working'. Would appreciate any assistance

A:get rid of superfetch

Have you tried this - Superfetch (Memory Prefetcher)

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I saw that there was a post on this and it was closed so here it is again. Superfetch will not start. Says can't find file. One member had an answer about an IO program causing a hiding of a file so that was the reason. I would like to know what that IO program was so I can delete it and see if it works for me. Thanks

A:Superfetch again.

Thanks to ShotgunFred over at SevenForums for this fix.

Yes, i had the same problem (I have reinstalled windows a few time recently (new harddrive), the same problem arises (must be a conflict with the software I use) ! I solved this today!
Download and install TweakPrefetch form Major Geeks!
Install and run the program! Click-->Clear Prefetch--> switch prefetch to Disabled-->leave Superfetch on Applications and Boot-->Click Apply-->Restart Computer-->hey presto Your Superfetch is fixed! Click to expand...

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Hi... new here and have learned lots and lots!
I have a new computer (Mar 2011) and after reading everything here about installing the SP1, I bit the bullet. Everything went smoothly.
The next day I noticed my boot time went from 45 sec to 95. From posts here, I waited 5 days to see if things "settled" down and no change. Sooooo.... I looked at the events logs and noticed the following events that occurred during the SP1 installation....

(info) superfetch service was changed from auto start to demand start....
(info) superfetch service entered the stopped state and finally....
(error) the superfetch service terminated with the following error "The service has not been started"
Subsequent boot-ups events make no mention of superfetch.

I do not know if superfetch was enabled prior to the SP installation and now am trying to get my boot time back to a reasonable time. Should I enable superfetch? The current status is "manual".

I've read everything on this forum about superfetch and notice some say that with a lot of ram, 8GB, it is not needed and won't help. My applications seem to open without much delay but this boot time is driving me nuts!

Ran malware bytes and ccleaner = o problems
Disabled most entries in msconfig start-up
I'm holding up on installing windows updates (29 of em now) so that this problem gets fixed first.

Appreciate any help.......

A:To superfetch or not?

Superfetch should have been enabled - Automatic (Delayed Start) in Services by default with a new installation of Windows.

The only reason to have Superfetch disabled, would be if you had an SSD. And even then, it's 50/50 on if it should be disabled or enabled with an SSD.

If you just have a HDD then it should be enabled - Automatic (Delayed Start).

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RE: http://www.microsoft.com/windows/products/windowsvista/features/details/superfetch.mspx

Just curious to see how many people here that run Windows Vista actually use SuperFetch.


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I have alwsays been getting fast and decent replies here so I?m starting a new thread (I hope this is the right place to start it) :P

This might be to much text for you guys but please read the two headlines atleast (and sorry for my bad english).

My problem is that I can?t get my superfetch to start!
The symptoms is:
My theme keeps switching between my custom theme and Window 7s Aero theme. My Internet card seems to have some trouble as well but i have found temporary solutions for that (It does NOT necessarily have anything to do with superfetch but figured i should mention it).

I found out about superfecth when i bought this USB stick yesterday and was going to use as a ready boost. Now in "proporties>Ready boost" tab of the USB stick win7 said that Sysmain was disabled but could be enabled with some tool, so i googled it and found superfetch and it was disabled.

Here is where the problem starts: when i press start on the superfetch service it starts as it should but after 3 min its off, the internet card is inactivated and the Aero theme is back. If I put in the USB stick directly after i?ve started superfetch everything as mentioned above happens but without the 3 minutes of waiting...

By the way, i dont get any messages about superfetch doesnt work or anything.

Anyone got a clue? ... please help


When you look at you Event Viewer Logs do you get an error number or anything pertaining to readyboost or superfetch? Type event viewer in the Start/Search Bar and hit return to open event viewer and take a look and post any errors that you see.

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I constantly hear that Superfetch should be turned off when you run the OS on an SSD. I totally fail to see the point.

RAM is still a lot faster than the fastest SSD and a good pack of cached stuff enhances performance. So why would anybody want to miss that opportunity.

The only argument I have seen is that people are afraid that the extra write operations would wear the SSD. I think this is phony. Measurements have shown that the SSDs will last a lot longer than you care to keep it.

Any other arguments??

A:Superfetch and the SSD

I leave my superfetch on.... I've had SSDs for over a year, and my first one is still at 100% life left... and I tend to format and reinstall alot cause I'm OCD about my computers.... I just recently upgraded my main system to two Vertex 3 120gb drives in a raid 0... I can't imagine using a HDD for a boot drive anymore... I make very few "tweaks" to my SSD"s

So, in short, I agree, the worry about writing too much is a bit overhyped, especially on the latest gen drives...

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My Windows 7 keeps switching from Aero theme to the regular theme. Every time it switches from Aero to regular, it says Superfetch stopped working.
Any clues what could be bothering Superfetch? D:


Quote: Originally Posted by Gamerguy

My Windows 7 keeps switching from Aero theme to the regular theme. Every time it switches from Aero to regular, it says Superfetch stopped working.
Any clues what could be bothering Superfetch? D:

Yes it could be a compatibility problem with your usb memory stick, or is that ready boost? Think I got mixed up.

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Iv'e just disabled mine as it was slowing the laptop down considerably, i was facing constant freezes and programs taking ages to open, switching superfetch off has sped the system considerably, ive read a few articles that advocate the use of superfetch,so i would like more info based on members experiences.
ive run some progs at the same time and what would normally open slow and freeze the laptop when trying to open multi progs ,
they have run fine with decent opening speeds. photoshop for instance opened in half the time, easily half probably more

the only thing i havent checked is the boot speed, will check in a few mins, i have soluto installed so i will have an accurate test comparison for the last boot speeds.

what are your thoughts / experiences with superfetch.

edit; just rebooted and soluto informs me my boot speed was 6 seconds longer, this to me is minimal in comparison to the benefits recieved with the freed up ram.

A:Superfetch on or off?

Leave it on.

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Have they changed its code in some fundamental way? I always used to have to disable it eventually on vista as it was very greedy with ram, quite frequently leaving me with very little head room. But, on W7 it seems incredibly well behaved. It's almost as if is not enabled.


How much RAM do you have installed?

Later Ted

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Hello all,

I know that if your using an SSD Drive that you don't need to have Superfetch enabled, but I think that my regular HDs do benefit from it.

I have an Intel SSD, and the toolbox recommends disabling it. Since I have all my games and data on regular HDs, wouldn't it actually hurt my system to disable it?

Thanks in advance...

A:SSDs and Superfetch

I don't think SuperFetch affects anything but the Boot process and the first few minutes of OS run time.

In my opinion, SSD's should not have SuperFetch, PreFetch, or BootTrace enabled.

I don't like PageFiles on SSD's, either.
There are conflicting thoughts on this subject, notably MS says "Yes" and Steve Gibson says "No". I'm going with Gibson on this one.
Nor do I like hibernation files as they take up a lot of room. (I don't use a hibernation file, myself)

If there was a way to make my games start up faster, I don't think I'd be interested. Really.
I'd be much more interested in something that made the game run better- what's a second or two start-up time.
We're talking about micro-seconds here... not much of an incentive.

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In theory, Superfetch seems like a good idea, but could it suffer from a bit of insanity? I've noticed, that when I've used a virtual machine (in VMWare) and shut down the virtual machine, the HDD LED lights up for 5-10 minutes and the HDD noise is a major nuisance. Looking in resource monitor, it seems that Vista keeps reading the virtual disk file of the VM I've just shut down. Stopping Superfetch stops the HDD noise.

Why would Superfetch start caching a VM disk file when I've shut down the VM? Isn't the whole point of Superfetch to cache files before I use them, and not when I've finished using them?

Also, when I start the system, the HDD works constantly the first 20-30 minutes. I've got 8 GB RAM, and reading 8 GB from the disk doesn't take 20 minutes, so how can Superfetch spend so much time reading the disk when it should have filled all the available cache memory within 10 minutes of frantic HDD reading?

A:Superfetch gone mental?

I had similar experiences. In fact, Superfetch slowed things down instead of speeding things up due to its massive HDD-access. It also took like 10 minutes after a reboot till it was finished (I have 4GB RAM) and it did its chores repeatedly since I use many RAM-excessive applications. I have 3 HDDs in my comp and they are not the newest models so I also had to stand quite the noise.

My solution? Disable it altogether. I realized an increase in speed due to Superfetch not occupying my HDDs and with them the system bus and my whole system got a lot more responsive and less noisier. As for the long loading times, that's quite normal. Don't forget that Superfetch might load a lot of small files which might be scattered all over your HDD (even if they weren't, reading small files is significantly slower than reading large ones). And it does all that while you're already working on the system which means that it has to flush pre-loaded parts due to new applications demanding RAM and then it has to reload the data. All in all, that's a never-ending task. Personally, I think that Superfetch rather helps wearing down your hard drives fatser (unless you're using SDDs) instead of accomplishing much. The idea behind it is nice, but it's still too basic to be of much use. For example it doesn't give you the option to exclude or specifically force the loading of files. Same goes for loading files according to certain file orders etc.

Anyway, give deactivating it a try and see if you se... Read more

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don't see it anywhere ,i want to disable it because i don't need it and i don't want my hard drive on 24-7

im running vista home premium SP1

A:cant find SuperFetch?


Click Start > in the search field type services

Hit <ENTER> or click Services to open it.

Once the services are open you should have Superfetch listed just disable


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I have been having difficulties with starting the superfetch service in task manager. I start it, it is 15% complete, the it displays this error: Error 2: The system cannot find the file specified
What to do?

A:Superfetch Errors


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When i check for performance issues, my windows notifies me the the SuperFetch is not running, Windows can take longer to start programs that you commonly open. So how can i fix the problem?
I'm using windows 7 home premium.

A:SuperFetch is not running.

To address the issue, please check the SuperFetch cache and service.

1. Click Start -> type
services in the search box, press Enter
2. Find Superfetch in the list, double click it.  
3. If the service is running, click Stop button. Verify Startup type is Automatic.
4. Navigate to %SystemRoot%\Prefetch folder and deleting anything in this folder.
5. Back to Superfech service, Click Start button to start the service.

Best Regards,
NikiPlease remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

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Q. Should I disable Superfetch if I have a solid state disk (SSD)?

A:Disable SuperFetch if SSD?


Good to know Windows 7 has it covered.
All those questions for naught!!!


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Hello everyone. I'm Ed, and after playing around with win 7,10,and linux, I'm back on windows Vista.
It's faster on my aging HW,and I'm free of the nagging about win 10. And it just works.

My question is about Superfetch. I like the idea of caching in memory,using that Ram for something. What I dont like is ,and this is the only flaw I found to Vista,the HDD trashing.
It's trashing my HDD for 2 days now. It will eventually stop or not ?
Would I see a big performance hit over time,if I keep it OFF ?

I experimented with Superfetch off,and the trashing stop imediatelly ,but the apps and the bootup take somewhat longer.
Thanks,and its great to be here

A:Vista Superfetch

I prefer to leave Prefetching on (as it really does speed up boot and application load times, but turn off Superfetch.

Now for Prefetching to work, the Superfetch service needs to be on. Did you disable the service, or did you disable Superfetch in the registry?

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i have read about this term "SUPERFETCH" can someone elaborate it ??
how does it impact performance in win7 how to enable and disable it..??
Ram v/s Superfetch idea ?

A:INFO :: what is SUPERFETCH ?

in simple terms, windows 7 loads unused ram with files that you use often, so programs launch quicker.

it uses ram sure, but what's the point of having ram sitting there empty? if the ram is needed by other apps, then the superfetch stuff gets deleted, meaning that no ram gets wasted.

it should be enabled by default, but you can check by typing services.msc into your startmenu searchbox - scroll down the list looking for superfetch - it should say that it's started and the startup type is 'automatic'.

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My laptop will no longer start up.  It will go into DOS mode when starting and will start in SAFE MODE, but when I turn it on for a normal startup, I get the Windows 7 sign-in then it just grinds for awhile and goes black, but nothing ever happens.
When I go into SAFE MODE and do the diagnostics on it, I get that all systems are ok, but it still never comes on completely.  The one message I do see is that "SuperFetch not running".
I am running in SAFE MODE at this time and everything works except the volume, and downloading of some things, but can someone PLEASE help me with this a.s.a.p!!!!!

A:Superfetch not running

1) There is no DOS mode
2) Superfetch wouldn't have anything to do with the system not booting properly
3) What is new or different since the last time everything worked properly (ie, new hw, new sw, virus, error, etc)?
4) What do you mean when you say it "grinds" for a while? Do you hear a grinding noise?

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Windows 8/8.1 is supposed to have superfetch disabled automatically when it recognizes a SSD, but mine is enabled. I have a SSD but also a secondary HDD that is accelerated with a 25 mSATA SSD via Intel Rapid Storage Technology. I'm assuming since the second HDD is enhanced with a SSD then there should be no reason whatsoever to leave superfetch on... Am I wrong? I'm thinking I should turn it off, and if there's anything else you think I should do to improve my settings or stop any services I don't need, please do feel free to let me know.

A:Superfetch enabled on my SSD?

No, in windows 8/8.1 it's enabled even if you have an SSD. Superfetch is different. It ignores it. You can disable print spooler and bluetooth service and homegroup services if you don't share files over your network.

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Does anyone notice that after statup is complete, you get a 2 and a half
minute of Prefetching going on. There is a 2 and a half minute of constant
hard disk activity during this time and from the Reliability and Performance
Monitor, it shows hundreds of:

svchost.exe (LocalSystemNetworkRestricted)
svchost.exe (secsvcs)

The top one is related to Superfetch.
The second one is related to Windows Defender.

Does anyone else get this?

By the way, here are some screenshots:


The first one is a screenshot in the Reliability and Performance Monitor
during the Prefetching. The second one I just took now of the Event Viewer
because I wondered why there are lots of Boot and Shutdown Performance
Monitoring errors. Not sure if this related or if this is normal or something
I can fix etc.

So I also don't know if I should be getting what is shown on screen shot 2.

A:2.5 Min Superfetch at Startup

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Hello eightforums =)

I can't find a good answer to this online, just years old posts saying disable pre/superfetch for any ssd system, so now I'm asking here:

I have a 250gb SSD as a boot drive (8.1 pro) and a 1tb HDD for storage

I have heard that Win 8 will automatically disable pre/superfetch if it detects an SSD as the system drive, as well as continue to allow pre/superfetch to operate on other drives (hdds) in the pc

Just wondering if anyone can confirm/deny this, and if there is a way to verify (other than benchmarking) that pre/superfetch is operating on my hdd but not my ssd?

Thanks in advance =)

A:Superfetch on SSD+HDD system?

The best answer is to let Windows 8 take care of it. Windows 8(and now 10) OS's are optimized for SSD's. It will see what you have, and even if the service is still on, will apply to HDD's what HDD's need, and to SSD's what SSD's need. the only change I made is to policies in device management for disks, because I have a UPS battery backup and for my laptop too, because it has a battery:

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My laptop doesn't start the Superfetch Service although set to automatic. The error message is:
"Windows could not start the Superfetch service on Local Computer. Error 2: The system cannot find the file specified."
Does anyone know the solution?
Any help appreciated

A:Superfetch problem

Open Windows Explorer and look inside your System32 folder (C:\windows\system32), check that the file sysmain.dll is there.

If sysmain.dll isnt there, run sfc /scannow.

SFC /SCANNOW Command - System File Checker

BTW, if you have an SSD, superfetch will be disabled.

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My Dell Vostro 1520 Laptop has given me the blue screen plenty of times in the past two days. It will only stay on for about 2-5 minutes before giving the error and shutting off. When it comes back on, I diagnose the problems and it says "Superfetch is not working". The only way I can access things is to go into safe mode but it doesn't allow me to perform any updates. When I try to allow the windows updates in regular mode, the blue screen pops up about half way through the process. I rebotted the laptop with the windows 7 installation disc and it deleted everything. I can still access files from a "windows old" folder but otherwise it wiped it out. Is Superfetch causing the problem and what can I do to fix it?

A:Superfetch issue

Go to Start/Search and type Run and press enter, or press the Windows key+R in the Run box type prefetch and press enter. Select all the files in the Prefetch folder and delete them.

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Just a little knowledge building here, i understand that superfetch loads applications most used into the memory for easier access, but i read an article explaining it, and it seemed to contradict itself, it said that it optiises boot times, but doesnt start fetching until the CPU is idling after boot, can someone please explain to me how both are possible?

A:Superfetch... how exactly does it work

read this white paper article, it'll explain it. Understand how SuperFetch uses RAM to enhance system performance, from Greg Shultz - White Papers, Webcasts and Case Studies - ZDNet

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In Vista 64 I disabled superfetch. My i7 was eating anything that I could throw at it without this service which beat my drive up several hours per day.

Anyway, I am now having problems installing Win 7. Could there be a connection?

Perhaps I need it back on?

The trouble is that it moves impossibly slow in the last stage of installation... (several hours or more). I have another thread on the issue, so the main reason for this one was to ask about the effect of having the service off before an install attempt.


A:Superfetch and Install

Quote: Originally Posted by Rhyalus

In Vista 64 I disabled superfetch. My i7 was eating anything that I could throw at it without this service which beat my drive up several hours per day.

Anyway, I am now having problems installing Win 7. Could there be a connection?

Perhaps I need it back on?

The trouble is that it moves impossibly slow in the last stage of installation... (several hours or more). I have another thread on the issue, so the main reason for this one was to ask about the effect of having the service off before an install attempt.


Prefetch doesn't do anything that would "beat your drive up for several hours per day." All prefetch does is log frequently used applications and "learns" portions of those applications to load into memory when Windows boots, and instructs the disk defragmenter to keep those portions together on the hard drive for speedy loading.

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Dont know what happened but i think that Advanced SystemCare is to blame.

Because yesterday I wanted to restore Superfetch service with

@echo off
sc config SysMain start= auto
sc start SysMain

but that didnt help. and today when I started ASC it deleted some value to optimize sysmain.dll
izbrisano is Deleted


Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AxInstSV\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CertPropSvc\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PeerDistSvc\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteRegistry\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SCPolicySvc\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SNMPTRAP\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinRM\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\fdPHost\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CscService\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WerSvc\|Start
Izbrisano HKEY_LOCAL_MACHINE\SYSTEM\Curre... Read more

A:I have no Superfetch Service

IGNORE this.
I change windows to english and whola Superfetch service is back.

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Hi, I'm new a novice and happy to be here.

I'm running MSWindows 7 Ultimate and when checking my performance get a message that Superfetch isn't working.

Control Panel/All Control Panel Items/Troubleshooting/check for performance issues

I've been to MSAnswers but no joy so far, perhaps this is the place to get it fixed.

On advice I've:
1. deleted contents of Prefetch and then Superfetch works only next time you reboot you're back at square one.
2. uninstalled my virus protection and rebooted. No change so reloaded it.

Any ideas folks? Any help will be v.appreciated. Graham.

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I run a program called Pinnacle studio (video editing software). I found it to be VERY slow operating. That included even the simplest task. I found a program called Enditall, that helped but not enough to satisfy me, plus it stopped my virus checker (not good). Then I found a post by one of the vista forums members (sorry, can't remember the name) via it's search function. It said to stop superfetch. I did that (put it on manual instead of automatic). My system runs VERY fast now, including Pinnacle studio.

Can turning off superfetch cause other problems or even errors?

A:Can no superfetch hurt my system?

Were did you receive this software?? Did it come with your Computer?

If It didn't come with your Computer then Please Uninstall it

Many Thanks,

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Hi,SuperFetch (SysMain) service stopped working. Everything on the computer runs slowly.The service is configured to "Automatic" and telling the system to start/restart SuperFetch, results in no change.I've checked to make sure that the SysMain.dll was present, which it is.Any suggestions?I'm working on a HP Pavilion Desktop, 3 MB RAM, Intel Core2 Quad Processor, 2 hard disks total capacity: 640GB, Windows VISTA Home Premium 32-bit SP2.BRANE-WAVE

A:SuperFetch Service won't Start

See if this helps: http://www.sevenforums.com/performance-maintenance/156744-superfetch-will-not-start-i-keep-getting-error-can-anyone-help.html

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Hello everyone!
Reading with different opinions about the shutdown or not superfetch service as well as paging files, leaving the Windows address, fixed values in minimum 2048 MB and 4096 MB maximum, others indicate a function in percentage of the amount of RAM installed. . .
In principle the options applied to Windows 8 / 8.1 would be applied to the other OS?

What other changes are proven to have brought,, improvements in Windows performance?

Grateful to all!

A:Superfetch / paging files

I'm guessing that you are trying to improve the performance of your computer?
Please do the following so we can see what you have going on.
Please download and install Speccy to provide us with information about your computer.  Clicking on this link will automatically initiate the download. 
When Speccy opens you will see a screen similar to the one below.

Click on File which is outlined in red in the screen above, and then click on Publish Snapshot.
The following screen will appear, click on Yes.

The following screen will appear, click on Copy to Clipboard.

In your next post right click inside the Reply to Topic box, then click on Paste.  This will load a link to the Speccy log.

Please download MiniToolBox to your desktop.
Right-click on MiniToolBox.exe and select Run as Administrator.
You will see an image like the one below.

Click on the following checkbox only:
• List Installed Programs
Click on Go to start the scan.  Once it is finished highlight the text, then copy it and paste it in your topic.

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In the last month I have encountered various problems with Vista.

The first problem is that I get an error message saying ‘Superfetch has stopped working’, usually when I am using the internet (my browser is Firefox). When this happens the internet stops working.

The other is similar but with the words ‘Windows Explorer has stopped working’.

Please can somebody ITK advice me on what further info I need to provide in order for them to help me to rectify this issue?

Thanks in advance..

A:Problems with Vista (Superfetch?)

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