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Svchost and explorer problems

Last response: in Windows 7
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July 22, 2011 2:03:12 PM

Hi there, recently I have been receiving big problems with both windows explorer and Svchost.
Windows Explorer often freezes up on me, at random points in the day, and eventually I get black screen with just the mouse pointer on it. This happens at every start up, but again, it happens at random parts of the day also!

As for my Svchost problems, I'm well aware these are services that run behind the scenes, however, I've quite often got 2 or more of these processes using more than 100mb of my memory EACH.

Here is a screenshot that shows this.


There has been no hardware or software changes in the last few weeks to initiate these problems, and I have fun several full system virus scans in the last few days with nothing coming up.
a c 228 $ Windows 7
July 22, 2011 3:03:17 PM

I'm not sure how to fix your explorer, but the svchosts are most likely needed. To see what's operating inside them, open a command prompt then type this exactly as is:

tasklist /svc /fi "imagename eq svchost.exe"

and you should get something that looks like this:

C:\Documents and Settings\xxx>tasklist /svc /fi "imagename eq svchost.exe"

Image Name PID Services
========================= ====== =============================================
svchost.exe 1056 DcomLaunch, TermService
svchost.exe 1124 RpcSs
svchost.exe 1244 AudioSrv, Browser, CryptSvc, Dhcp, dmserver,
ERSvc, EventSystem,
FastUserSwitchingCompatibility, helpsvc,
HidServ, lanmanserver, lanmanworkstation,
Netman, Nla, RasMan, Schedule, seclogon,
SENS, SharedAccess, ShellHWDetection,
srservice, TapiSrv, Themes, TrkWks, w32time,
winmgmt, wscsvc, wuauserv, WZCSVC
svchost.exe 1360 Dnscache
svchost.exe 1404 LmHosts, RemoteRegistry, SSDPSRV
svchost.exe 228 WebClient
svchost.exe 552 Net Driver HPZ12
svchost.exe 804 Pml Driver HPZ12


Sorry, I don't know how to keep the text above from wrapping.
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July 22, 2011 4:04:34 PM

Image Name PID Services
========================= ======== ============================================
svchost.exe 800 DcomLaunch, PlugPlay, Power
svchost.exe 924 RpcEptMapper, RpcSs
svchost.exe 140 AudioSrv, Dhcp, eventlog,
HomeGroupProvider, lmhosts, wscsvc
svchost.exe 432 AudioEndpointBuilder, hidserv, Netman,
PcaSvc, SysMain, TrkWks, UxSms, Wlansvc,
wudfsvc
svchost.exe 536 AeLookupSvc, Appinfo, BITS, Browser,
EapHost, gpsvc, IKEEXT, iphlpsvc,
LanmanServer, ProfSvc, Schedule, SENS,
ShellHWDetection, Themes, Winmgmt, wuauserv
svchost.exe 1332 EventSystem, fdPHost, netprofm, nsi,
WdiServiceHost
svchost.exe 1444 CryptSvc, Dnscache, LanmanWorkstation,
NlaSvc
svchost.exe 2152 BFE, DPS, MpsSvc
svchost.exe 2948 ezSharedSvc
svchost.exe 2996 FDResPub, FontCache, SSDPSRV, upnphost
svchost.exe 1680 stisvc
svchost.exe 3308 bthserv
svchost.exe 3408 PolicyAgent
svchost.exe 4640 p2pimsvc
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a c 228 $ Windows 7
July 22, 2011 4:11:51 PM

Those are all typical windows services. There should be no problems with those, unless a virus or something made modifications to one of those services.
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July 22, 2011 5:42:50 PM

It seems a bit out of the ordinary that these processes are taking up so much memory. My other laptop, also on Windows 7, doesnt have these svchost problems, nor does it have the windows explorer problems.
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a b $ Windows 7
July 22, 2011 6:18:07 PM


To tie it down a bit further, it's helpful to split the shared Services so where one host is serving more than one Service, type sc config /? at the Command Prompt and look at the options - type=own should do the trick.


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July 22, 2011 6:57:15 PM

Ok thanks, On to the explorer options.. i occasionally get an error message, and this error message reads "Failed to dsplay security & shutdown options"
And not only does it happen on the times i mentioned, it also affects updates. Last night my laptop did an update, took 2 hours to complete the one update, as it seemed to freeze on the "unpacking update" part.
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a c 228 $ Windows 7
July 25, 2011 11:46:52 AM

When your updates fail, does it show up as a CAPI2 error in the event log sort of like this?

Failed extract of third-party root list from auto update cab at: <http://www.download.windowsupdate.com/msdownload/update...; with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.

If so, here is the fix for it.

http://support.microsoft.com/kb/2328240
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a b $ Windows 7
July 25, 2011 12:06:25 PM

Can u post full screenshot of your process list?
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!