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  1. #1
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    Win XP stability (SP1)

    Can anyone help with the meaning of the following error message displayed during startup of Win XP:

    svhost.exe
    The instruction at '0x77f5234e' referenced memory at '0x0088017c'. The memory could not be "written". Click on OK to terminate program.

    Also during startup the status bar is sometimes white rather than blue (reverts to blue on restarting).

    I've been having a lot of problems with Win XP lately, so much so I thought I may have to reformat the hard drive and reinstall from scratch. I also got a message recently that McAfee VirusScan files had been tampered with, but there did not seem to be any virus present. Removing VirusScan at least made the operating system viable. The other possible suspects I have in mind for the instability are recent updates to Win XP itself.

    Any pointers gratefully received.

  2. #2
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    Re: Win XP stability (SP1)

    Have you been able to get a virus scan from some product? It could also be a memory or disk drive problem. Is the PC still under warranty? If so, contact the vendor. As painful as that may be, sometimes they do have good information once you get through the script. Also, have you updated any drivers recently?

    Joe
    Joe

  3. #3
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    Re: Win XP stability (SP1)

    Thanks for the suggestions Joe. I have run a virus scan, which did not find anything. Unfortunately outside warranty, but certainly worth checking out memory if it's not just software. No driver updates.

    Nick

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    Re: Win XP stability (SP1)

    Nick,
    If you have multiple memory sticks you could remove one and see what happens. You'll run with reduced performance but may be able to figure out the problem. If memory is the problem at least it is relatively inexpensive to fix.

    Joe
    Joe

  5. #5
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    Re: Win XP stability (SP1)

    Joe

    Thanks once again, certainly worth trying.

    Nick

  6. #6
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    Re: Win XP stability (SP1)

    Might want to read this Trojan Summary SVHOST.EXE file is listed under Trojan Characteristics.
    Trojan Name:MovieWorld:
    Risk Assessment
    Corporate User : Low
    Home User : Low

  7. #7
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    Re: Win XP stability (SP1)

    Edited by WyllyWylly to remove font colors that were hard to read in alternate skins. [/i] <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

    Found this on the Internet. Please Read.
    <hr>posted 05-17-2002 10:35 AM
    --------------------------------------------------------------------------------
    SVCHost is a windows file, SVHost is part of a virus attack, generally using FireDaemon. See if Firedaemon is running in services, and if so delete it and services running with it, ie. svhost etc....

    posted 02-05-2003 10:38 AM
    --------------------------------------------------------------------------------
    NO NEED TO REFORMAT YOUR DRIVE
    In order to delete the virus app C:Windowssvhost.exe you first need to search the Windows Registry for svhost.exe

    I found mine under a registry entry of Intel I then deleted the entry of C:WindowsSystem32svhost.exe -start

    Re-boot the computer and then delete the file C:Windowssvhost.exe

    ** The registry entry runs the virus on boot-up preventing you from deleting the file. By deleting the registry entry and re-booting the computer the virus doesn't run on boot up so you can delete it. **<hr>

  8. #8
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    Re: Win XP stability (SP1)

    This problem has been around in various forms for a while in the NT kernel. Windows 2000 exhibits this behavior too and it's not easy to troubleshoot.

    Do the basics.....virus scan, defrag, checkdisk, updates, latest drivers, the works. If you keep having the problem, it could be hardware related. Joe's suggestion is a great way to narrow it down, and I'd add to that to try different memory slots with each stick. Then again, you might have a program leaking kernel memory, or doing something else strange, but it would almost certainly be something that operates in the kernel and not in the user space in memory. See if the basic five that I listed and any other suggestions in this thread solve it. Remember to do things one at a time, and test. That way you will know the solution in the future.

    Keep us posted.
    -Mark

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    Re: Win XP stability (SP1)

    Thanks for your kind suggestions. Will certainly let you know if anything useful turns up. At least I've eliminated the trojan threat thanks to Joe!

    Nick

  10. #10
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    Re: Win XP stability (SP1)

    Your addition to Joe's suggestion has borne fruit! I've used GoldMemory to comprehensively test the RAM memory sticks. I have 3 sticks (128, 256 and 256). Inserting just one stick in one slot (whether slot 1 2 or 3)works fine, filling slots 1 and 2 at the same time but leaving slot 3 empty also passes the GoldMemory test. However, every time I fill all three slots simultaneously the test is failed after a short time - and this is the case whatever stick of memory I insert in slot 3. Can you explain this rather anomalous behaviour - does it mean something has gone wrong on the motherboard (K7M REV 1.03 - almost exactly three years old)? It would seem that Win XP is eliminated as the culprit, since as you're probably aware GoldMemory works from a freeDOS-based boot floppy.

    Many thanks for all the help so far

    Nick

  11. #11
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    Re: Win XP stability (SP1)

    May be one of the sticks of Memory is bad.

  12. #12
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    Re: Win XP stability (SP1)

    Thanks for the suggestion. The GoldMemory RAM test program seems to show that each of the sticks inserted by itself is OK. Another idea I've come across is that instability can be caused by the order in which the sticks are inserted - so I'll try reversing it tomorrow morning (working on UK time).

  13. #13
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    Re: Win XP stability (SP1)

    Have you checked every combination of paired sticks (AB, AC, & BC)? Maybe your earlier tests avoided the dodgy combo.

    Also, are they all the same speed (& manufacturer)? The manufacturer shouldn't mateer, but
    <font face="Comic Sans MS" color="blue">TimOz</font>
    <img src=/S/flags/Finland.gif border=0 alt=Finland width=30 height=18> <img src=/S/flags/Australia.gif border=0 alt=Australia width=30 height=18>

  14. #14
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    Re: Win XP stability (SP1)

    Although you don't hear much about it some motherboards have trouble with certain RAM configurations. I would think that it's something wonky with the design of the board, and not the memory. You're using 640MB total. Perhaps the board is only rated up to 512MB total, in any combination of slots? I would check the manual and/or the manufacturer's website for RAM configuration information.

    Still, even with the grief you've encountered....I'd rather run into this than fiddle with parity and SIMMs again. <img src=/S/smile.gif border=0 alt=smile width=15 height=15>
    -Mark

  15. #15
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    Re: Win XP stability (SP1)

    Sounds like if you can run with 2x 256, I'd do it. Another possible explanation to your problem is that with unbuffered memory (and I'm no expert, but I've been reading up), meaning that there's no stored power on the memory stick, there just isn't enough "juice" available in the short time that it's needed to power up large amounts of memory. So even if each stick is fine by itself, the power required to run all three may be tipping you over. Rather than switch to buffered mem. (you can't mix the two), you'd be better off with 512, which is plenty for xp.

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