svchost.exe-application errorthe instuction at "0x001a3ae7"referenced memory at 0x00000000 the memory could not be readclick ok to terminate,click cancel to debugno matter which i click it freezes my computerhow do i fix this?7 people need an answerI do too

You might try http://www.memtest86.com/ or "sfc /scannow" (See:http://www.thinktechno.com/2007/07/06/how-to-fix-windowx-xp-corrupted-files/ )

I have a Dell Vostro that is giving the exact same issue. Were you having any other issues Joe before this occurred?

My exact same issue started on July 3 with no previous problems at all. I'm experienced, done all the usual, stumped so far. Any further ideas would be appreciated.There have been some suggestions it is a result of a recent botched Windows Update 6/26/10 but I have not isolated that as yet as related.

I have the same error message and am running XP Home edition. My problem started July 4. I know at one point, I had to force the PC to shut down. I can't remember if that was before or after the error appeared. ThePC was running fine before the 4th and is always up-to-date with anti-virus software and Windows updates. Tried numerous spyware scans, virus scan, registry fixers with no luck and no real issues found. If I leave the error message alone, my PC functions fine except I cannot access the Microsoft Windows update site (even if I turn auto updates off and reboot).

14 hours 57 minutes ago Shawn Eary wrote:You might try http://www.memtest86.com/ or "sfc /scannow" (See:http://www.thinktechno.com/2007/07/06/how-to-fix-windowx-xp-corrupted-files/ )Did any of you try Shawn's advice above?Young and Learning... Have Mercy

same trouble with xp pro, I did try Shawn's advice with no luck. It acts like a malware infection, scans of malwarebytes did not see anything. I have tried many svchost.exe fixes with no luck. windowsupdate page will not display.

This error acts like malware.... Hmmm.Try this Malicious tool remover by MSFT:Microsoft Malicious Removal Tool - 32 bithttp://www.microsoft.com/downloads/details.aspx?FamilyID=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=enMicrosoft Malicious Removal Tool - 64 bithttp://www.microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495E-94E7-6349F4EFFC74&displaylang=enTry the trial version of Hitman Pro :Hitman Pro is a second opinion scanner, designed to rescue your computer from malware(viruses, trojans, rootkits, etc.) that have infected your computer despite all the securitymeasures you have taken (such as anti virus software, firewalls, etc.).http://www.surfright.nl/en/hitmanproAlso I found an interesting little tool:How to determine what services are running under a SVCHOST.EXE processhttp://www.bleepingcomputer.com/tutorials/tutorial129.htmlTHIS should give us a BIT more info.Young and Learning... Have Mercy

14 hours 57 minutes ago Shawn Eary wrote:You might try http://www.memtest86.com/ or "sfc /scannow" (See:http://www.thinktechno.com/2007/07/06/how-to-fix-windowx-xp-corrupted-files/ )Did any of you try Shawn's advice above?Young and Learning... Have MercyI tried the command sfc /scannow (inserted XP disk when prompted), rebooted, and still have error.

You have an XP disk? Try the Recovery console.And I found this nice little tool:How to determine what services are running under a SVCHOST.EXE processhttp://www.bleepingcomputer.com/tutorials/tutorial129.htmlTHIS should give us a BIT more info.Copy paste the info you get onto here. Young and Learning... Have Mercy

Hitman pro found the threat and deleted. All is good thank you Chaos

Hitman pro found the threat and deleted. All is good thank you ChaosAlright, so I found a solution ^_^ At least for longisland94.Since this worked for him, you show try the same:Hitman Pro is a second opinion scanner, designed to rescue your computer from malware(viruses, trojans, rootkits, etc.) that have infected your computer despite all the securitymeasures you have taken (such as anti virus software, firewalls, etc.).http://www.surfright.nl/en/hitmanproHere ya go, try this and tell me the results. I want to know WHAT the file/program that it deleted was called and any OTHER info that it gives you. Just so that I can commit this to memory and/or get more data on it.ALSO, if this ends up working. To keep this from happening AGAIN, download ALL three of these programs. Unless you already have good, Spyware, Antivirus, and Malware programs.http://www.malwarebytes.org/mbam.phpThis will check for malware, AND registry key errors, or so most of the forums say. >.>http://superantispyware.com/You can download the free version and it will check for spyware as well.http://www.microsoft.com/security_essentials/This is a free all in one program, but I still reccomend the other two.Young and Learning... Have Mercy

Hitman Pro immediately found a possible varient of TDL3 (alias Alureon) rootkit detected, but it ended with the Blue Screen. From the message that starts with Driver_IRQL_Not_Less_Or_Equal it looks like atapi.sys might be missing.

Ok well, I have found an aswer that seems to work.Use the following trial software to delete the varient of TDL3 (alias Alureon) rootkit:Hitman Pro is a second opinion scanner, designed to rescue your computer from malware(viruses, trojans, rootkits, etc.) that have infected your computer despite all the securitymeasures you have taken (such as anti virus software, firewalls, etc.).http://www.surfright.nl/en/hitmanproNow if you end up getting the BSoD (Blue Screen of Death) like the below:bowen43 Typed:Hitman Pro immediately found a possible varient of TDL3 (alias Alureon) rootkit detected, but it ended with the Blue Screen. From the message that starts with Driver_IRQL_Not_Less_Or_Equal it looks like atapi.sys might be missing. Start your computer in safe mode with command prompt (Do this by tapping the f8 key repeatedly until a screen of options comes up and use your arrow key to select "Start in safe mode with command prompt.")Log into your account, and then when command prompt comes up type inexplorer.exeFind hitman pro, open it, have it run the scan and delete the Alureon varient. Hopefully this will work. If it doesn't, there are only THREE other options you can choose. Keep in mind that you may loose some files with this (Method 1). With Method 2 and 3 you WILL loose any and all files you have on your computer.Method 1:You can try booting to Last Known Good Configuration Mode, which could resolve this issue. To do this. Tap the f8 key repeatedly until a screen of options comes up and use your arrow key to select "Boot to last known good configuration."Method 2:Startup Repair (If your computer manufacturer has preinstalled recovery options, Startup Repair might also be installed on your hard disk. If your computer does not include Startup Repair, your computer manufacturer might have customized or replaced the tool. Check the information that came with your computer or go to the manufacturer's website.)ORUse your Windows XP startup disk and use the Recovery Panel located on the disk.Method 3:System Restore (Turn back time on your PC: Undo system changes with System Restore). In the list of restore points, click a restore point that was created before you began to experience the issue. ALSO, if this ends up working. To keep this from happening AGAIN, download ALL three of these programs. Unless you already have good, Spyware, Antivirus, and Malware programs.http://www.malwarebytes.org/mbam.phpThis will check for malware, AND registry key errors, or so most of the forums say. >.>http://superantispyware.com/You can download the free version and it will check for spyware as well.http://www.microsoft.com/security_essentials/This is a free all in one program, but I still reccomend the other two.Young and Learning... Have Mercy

hitman pro also worked for me thanks chaos

Folks, I haven't tried the solution yet. If I do, would it be best to reboot under the Safe Mode and then go to Hitman Pro, or should I just use the Safe Mode later if I get the BSoD?

Folks, I haven't tried the solution yet. If I do, would it be best to reboot under the Safe Mode and then go to Hitman Pro, or should I just use the Safe Mode later if I get the BSoD?Now that I think about it, that IS a good suggestion/idea... NICE!Yeah, that sounds actually like a decent plan, go ahead and do that and tell me how it works.Young and Learning... Have Mercy

Hitman Pro found a possible varient of TDL3 (alias Alureon) rootkit detected on mine as well. But it also found a malware named termdd.sys. This seems to have been the culprit! Thanks Chaos!!!

Hitman Pro found a possible varient of TDL3 (alias Alureon) rootkit detected on mine as well. But it also found a malware named termdd.sys. This seems to have been the culprit! Thanks Chaos!!!The termdd.sys was probably intorduced by Alureon, Alureon likes to infect and corrupt the atapi.sys file and introduce more malware, viruses and spyware.If you want to thank me my friend, vote my post as helpful ^_^And don't sweat it, this is what I attempt to do in these forums!Young and Learning... Have Mercy

one weird problem after the fix, I can access the internet, network printers by ip address, can remote desktop to and from but I can not reconnect to my network drives. What have I done? I am trying to connect to a server that just shares a few files. No domain

one weird problem after the fix, I can access the internet, network printers by ip address, can remote desktop to and from but I can not reconnect to my network drives. What have I done? I am trying to connect to a server that just shares a few files. No domainO.o o.O O.O GAH!!When you say no domain, what exactly do you mean by that?Young and Learning... Have Mercy

I do not log on as a domain. just file sharing between computers

Hmmm DAMN >.<, give me time to look it up, or you might want to post this problem on this forum while your waiting to see if I can come up with solution: http://social.answers.microsoft.com/Forums/en-US/xpnetwork/threadsMAKE SURE you give a DETAILED description.I will try to look up your... Issue, I'm NOT a very good network tech person, even though I managed to set MINE up XD. EDIT!!!!:I have found something that may or may not help? (This is in regards to longisland94's problem. NOT the SvcHost.exe problem, if you are looking for answers see the post that is marked as a proposed answer.)http://technet.microsoft.com/en-us/library/cc778552(WS.10).aspxYoung and Learning... Have Mercy

Hitman pro found the threat and deleted. All is good thank you ChaosIf Chaos' suggestion helped you, please mark it as an answer and click the "Vote As Helpful" Button. Chaos will appreciate both of the two kind gestures.Only the author of a thread and moderators can click "Mark as Answer." Everyone else gets to "Propose as Answer" which isn't nearly as cool...

YEah, I know tell me about it. I have ONE answer, and I only got THAT because I told some lady she posted on the wrong wesite >.> Whoopie! (Sarcasm)Hey I gotta give you some credit, If I didn't see that you posted here, I most likely wouldn't have bothered with this forum.... I learned WAAAAY too much today.... Of course, one can never learn enough so... Hey...Young and Learning... Have Mercy

Hey, just thought I'd create a profile in order to thank you and vote up your post. My computer's been bugging out for a while and I've tried a bunch of different registry scanners (even mbam, my favorite for a couple years, let me down). Thanks for the Hitman Pro suggestion. Worked instantly. Good luck with your studies! I've become interested in programming over the last few months and may look into it when I head off to college in the fall. Thanks again

Hey no problem, that's what I'm here for ^_^.Young and Learning... Have Mercy.

My PC is fixed! I contacted Hitman Pro regarding the blue screen and within half an hour they responded!!! They suggested I tryhttp://support.kaspersky.com/downloads/utils/tdsskiller.zip . I used that and it flagged tcpip.sys as being infected by TDSS Rootkit. Once resolved, I was able to use Hitman Pro, which identified a couple of minor issues (note: I tend to have a squeeky clean well protected PC, so that's quite an accomplishment). No need to run the additional software if Hitman Pro solved your issue. Just adding the link in case someone had the same problem I had. My guess is my problem may be unique and may have have been caused by me messing around most of the day trying to fix the orginal problem.Voted!

Hey alright, cool. I gave you some props since you helped.Young and Learning... Have Mercy.

This error acts like malware.... Hmmm.Try this Malicious tool remover by MSFT:Microsoft Malicious Removal Tool - 32 bithttp://www.microsoft.com/downloads/details.aspx?FamilyID=AD724AE0-E72D-4F54-9AB3-75B8EB148356&displaylang=enMicrosoft Malicious Removal Tool - 64 bithttp://www.microsoft.com/downloads/details.aspx?FamilyId=585D2BDE-367F-495E-94E7-6349F4EFFC74&displaylang=enTry the trial version of Hitman Pro :Hitman Pro is a second opinion scanner, designed to rescue your computer from malware(viruses, trojans, rootkits, etc.) that have infected your computer despite all the securitymeasures you have taken (such as anti virus software, firewalls, etc.).http://www.surfright.nl/en/hitmanpro Also I found an interesting little tool:How to determine what services are running under a SVCHOST.EXE processhttp://www.bleepingcomputer.com/tutorials/tutorial129.htmlTHIS should give us a BIT more info. Young and Learning... Have Mercy Thanks Chaos -- ran into the same problem on a friend's computer and Hitman seems to be taking care of it. Sounds like this one hit on 7/4/10. Also found TDL3 on her computer.

No problem ^_^ Young and Learning... Have Mercy.

I do not log on as a domain. just file sharing between computersTry to restablish the shares and make sure all names correct and the Shares enabled on both computers. nass -- http://www.nasstec.co.uk

Hitman corrected this issue for me, however since then I've been unable to use my USB keyboard. Suspect that TDL3 (alias Alureon) was glommed to both mouse and keyboard drivers during infection (that's consistent with its behavior at the time). Mouse is working ok.I've tried several different keyboards. I can type via Remote Desktop. When I plug and unplug the keyboard (to any of several different USB ports ) I see the expected appearance/removal of the HID Keyboard entry under Device Manager. I can use the keyboard at BIOS and for F8 command at boot (Safe Mode), however KB doesn't work in Safe Mode either. The KB is definitely receiving power, however Caps-Num-Scrl Lock keys will NOT light up.I've run SFC /scanow to completion, no effect. I've re-applied SP3, no effect.I don't know if a command-line replacement of the keyboard driver would help - can't find detail on how to do that.Help me OWK you're my only hope.

O.o DUDE XDHOLY &@*#Give me the EXACT name of the keyboad I know this sounds odd, but do you have a microsoft keyboard by any chance, If so, do you think you could use that? Let's just say I'm not at home and theres some sort of Family safety filter thingy. It's annoying as ____ >.> and it block just about all the sites >.<Company AND model numder/makeYoung and learning...Have mercy - ChaosIf this post resolves your issue, please click the "Mark as Answer" or "Helpful" buttons. This helps other users with similar problems find the answer faster.

Dell OEM keyboardsi was at work earlier and using the one with the silver Play/Pause/Stop feature buttonsi've since returned home with the box and am using (trying to use) another Dell OEM keyboard - this one is:CN-0DJ331-71616-91T-1GRK Rev A03but like i said it's just the base keyboard you get with an OptiPlex i really thought SFC /scannow would have fixed this

Hmmm anyway you can get on dell's website. Look for the driver and reinstall it(The key board driver)I'm not at home and have limited acess right now lol.(Using my little bros PC and he has some sort of Family saftey ____ on it) >.<As for SFC /scannow, that's not nessicarrily always gonna work unfortuntely. Five me a secThere was another SFC "Fix" type of command.... I'll look it up. EDIT:No luck with that fix thing. Hey, got a question. You wouldn't happen to have an OLD keyboard, we're talking PRE USB, or one of those USB to (Whatever it's called) connectors.I've noticed that on current computers you don't need to install keyboards that run off the old style connector. Try this, I know it's a BASIC article, but why not?http://support.microsoft.com/kb/258826 Also, is the legacy keyboard setting enabled in BIOS? If so turn it off.If not, turn it on.See if that doesn't work. Another random thing:Do you happen to know how to turn off Driver Signature Enforcement.If so, try it.Young and learning...Have mercy - ChaosIf this post resolves your issue, please click the "Mark as Answer" or "Helpful" buttons. This helps other users with similar problems find the answer faster.

Found this for someone else they said Hitman Pro seemed to have fixed the problem.

Yes, yes it does.I'm the one that found it lol.Young and learning...Have mercy - ChaosIf this post resolves your issue, please click the "Mark as Answer" or "Helpful" buttons. This helps other users with similar problems find the answer faster.

I am having the same issue as the original poster. However, here is my issue. When I run Hitman it detects the Alureon and a few other minor threats. When I advance to remove I get a few windows error popups (explorer.exe and something else that I didn't catch), and Hitman asks to reboot to complete removal. At this point the computer locks up and can't complete rebooting.I was fine with this, as I was just going to boot to safe mode with command prompt. I did this, loaded explorer.exe, and opened Hitman. However, Hitman needs to connect to the internet, which is not possible, so how has anyone had any success with this route?Any suggestions are appreciated.

Reboot in safe mode with networking.Young and learning...Have mercy - ChaosIf this post resolves your issue, please click the "Mark as Answer" or "Helpful" buttons. This helps other users with similar problems find the answer faster.

Thanks. This should have been obvious i suppose. I ran the scan a second time in windows normally and it completed without issue, so I did not need the safe mode with networking. Thank you very much for your help.

Lol, no problem.A wise man once said:If you want to hide something, hide it in plain sight.Young and learning...Have mercy - ChaosIf this post resolves your issue, please click the "Mark as Answer" or "Helpful" buttons. This helps other users with similar problems find the answer faster.