Re: Display Adapter Problems

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

Hi Nightowl,

Good shot. Although it hasn't solved the problem yet, I guess it narrowed
the source of it.
I will explain what I did.

Following your recomendation I found many old hidden devices, digital
cameras, phones, printers, scanners, and even an unknow video card. Good. I
uninstalled one by one of it, and reboot the computer. No luck, I still have
the same old pproblem.

Next, I uninstalled the video cards and reboot the computer. I made a new
install of the video drivers, reboot, and no changes with the problem.

Then, using msinfo I inspected the IRQs sharing and conflicts of the
computer.
No problem at all, but the video card was sharing the IRQ 19 with an ADAPTEC
SCSI card.
Hummm, maybe I found the villain here! :)
I unistalled the SCSI card on the control panel, and turned it off.
Then I opened the computer case and I unscrewed it.

New boot, Windows loads, and the problem is still the same! :(
Msinfo shows no problems with the devices:
http://img102.imageshack.us/img102/3229/snapshot12zt5.jpg
and
http://img102.imageshack.us/img102/9908/snapshot11ps8.jpg

Well, I think the problem it's related with Nvidia Control Panel when
loading Windows.
When the display adapter has the question mark on Device Manager, there's no
Nvidia Control Panel icon on the Control Panel, and there's also no Nvidia
Settings icon on the Windows task bar. After the temporary fix, it show up.
See image:
http://img102.imageshack.us/img102/233/snapshot9bu3.jpg

I think somehow there's a sort of conflict in the Windows start up with the
Nvidia Control Panel drivers.
Using Msinfo again, it's impressive the huge quantity of drivers Windows
loads at the start up.
http://img102.imageshack.us/img102/7844/snapshot10cq3.jpg

Well, it's an odd situation, because I'm back to the starting point.
At least, now I'm sure where's the problem.
But is still hard to fix it definitely.
I'm opened to hear opinions.

Thanks.


"Nightowl" <owl@[127.0.0.1]> wrote in message
news:TLQIJ7dlsKEGFwgv@xxxxxxxxxxxxx

This is a long shot, but it's worth a try. . . I'm wondering if remnants
of old installs/previous drivers may be still trying to load at boot
time and causing your problem.

After you've performed your "temporary fix" and got the display working
and set as you want it (be sure Device Manager is closed at this point):

Open a Command window (Start |Run, cmd <enter>) and type:
set devmgr_ show_nonpresent_devices=1 <enter>
then type:
devmgmt.msc <enter> (Device Manager opens up)

[*Important!* Don't close the Command window yet -- the settings will
only persist while the session remains open.]

In Device Manager go to the View Menu and check Show Hidden Devices. Now
have a look and see if there are any extra, greyed-out, "ghost" entries
under Display Adapters. Also scroll down and check whether you might
have a Device Manager category for Unknown Devices (the icon is a big
yellow question mark) -- there could be graphics adapter entries in
there also. If you find any in either place, right-click and Uninstall,
then try rebooting and see if anything's changed.

If you deleted any "ghosts" but the settings are still lost on reboot,
look at the IRQ settings to see what else is using the same resources as
the video card. Perhaps you might be able to swap the other device to a
different slot and force it to use a different IRQ, or change places
with something that won't clash with the video card.

Good luck! Let us know how it goes.
--
Nightowl


.

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