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Solved: Vista loses display settings - garbled display

Discussion in 'Windows Vista' started by zapp22, Nov 28, 2012.

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  1. zapp22

    zapp22 Thread Starter

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    this is a strange one to me...:confused:

    the hdwe is a hp "minitower" athlon processor, embedded nvidia vid, fairly fast and responsive on a good day.
    I worked on this system a year ago, obsessively, setting up Vista as well as is possible - lean/clean/stable.
    recently the primary user account, upon logging in, gets a "noise" display on the monitor that looks like an inability to sync.
    I shall not rule out the possibility that an "extortion-ware" malware is causing this but extensive checks don't show any malicious thingies. There is a lightly used, tech-support second user account that logs in fine.
    I set the display properties on the troubled account, the display looked normal again, but after a couple of days of use, the bad display issue is back.

    is this a known issue? video refresh rate anomaly ??? why would it be "fine" for a year, then suddenly develop the problem? debug steps?

    I worked on it 2 weeks ago and it was fine when I finished, now in the ditch again so I'm fishing for new debug steps to try and determine what exactly causes it to go non-linear...

    thanks for your suggestions
     
  2. dai

    dai

    Joined:
    Mar 6, 2003
    Messages:
    11,198
    try reinstalling the drivers


    in the device manager uninstall the video card
    reboot tapping f8 and choose low resolution mode
    when windows finishes rebooting
    disable a/virus
    install your drivers
    reboot the computer
     
  3. zapp22

    zapp22 Thread Starter

    Joined:
    Nov 26, 2004
    Messages:
    520
    will do. I'm also taking a diff monitor with me for debugging purposes - want to see if problem recurs, if so, swap the mon and see if the same.
    if you have any other idea lemme know, and Thanks!
     
  4. dai

    dai

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    11,198
    take a psu with you as well,a higher wattage than is in it
     
  5. zapp22

    zapp22 Thread Starter

    Joined:
    Nov 26, 2004
    Messages:
    520
    well well... what a strange day its been. The symptom appears to have been caused by a poorly-executing Rootkit infection: whistler.c and .a. the system had no other symptoms and previous routine full scans with malwarebytes and AVAST had missed these.

    I got suspicious when it went symptomatic while I was at a Windows Recovery screen - thus, pre-boot... while I was deciding whether to just try the normal bootup it flipped the display and seemed to lockout keyboard. looking at the display very carefully it looked like a set of characters arranged in a pattern that resembled the sort of diagonal wave thing that results from bad sync. so this was not at all like the more creative 'extortion' rootkits- FBI Warnings or Fake Facebook advisories, stuff like that. noticed one living, and leftovers of one uninstalled P2P apps - always a red flag. while first uninstalling, then deleting the folders left behind, something tried to duck/hide and AVAST caught it on the fly this time. Took awhile but it looks to be clear now. very strange day. Kredit Kaspersky for their TDSSKILLER - good things come from the KGB! I went ahead and uninstalled the embedded Nvidia adapter, then reinstalled it after the other steps. also scanned the nvidia hairball just to be sure.....
     
  6. dai

    dai

    Joined:
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    Messages:
    11,198
    glad you have it sorted thanks for posting the solution
     
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