corrupted bootscreen

[audiolover]

I have a strange problem. I installed W7 on a fresh partition, install went smooth but during the install (when I need to input name, pc name, keyboard etc.) the screen got corrupted (I can barely read where to click yes or no). As soon as W7 is started the screen is perfect.
Booting W7 the screen looks good at first, the splashscreen (3 moving objects) looks good, then the W7 bootscreen is corrupted and after clicking on my loginname W7 starts normally.
Whenever I need administrator rights for something and the dialog pops up the screen is corrupted again, I click "yes" in the corrupted screen and I am back in the faultless screen of W7??!! I tried several reslotions but it does not seem to solve the problem.
VGA card is NVIDIA 7800GS, problem is with default W7 driver and with NVIDIA WHQL driver. Monitor is recognised properly and connected via DVI and resolution is set to "native".

I did a fresh install twice but with the same result, the 64bit version too.

 

[torrentg]

Could be the card is having hardware problems, like a component is failing.

Check your refresh rate. Make sure it's something compatible with the monitor, probably 60 Hz.

 

[audiolover]

does W7 use the same refreshrate during boot as the refreshrate set in W7 or can I set (force) a different refresh for boot?

 

[Captain Zero]

It's going to boot into 60 Hz from your BIOS post, so yes, it's the same as your desktop by default. Any/Every NTSC monitor does 60 Hz.

 

[audiolover]

just discovered that booting in "safe mode" has no corrupted screen?

 

[dwelche]

Hi

I have the same card - NVIDIA 7800GS AGP - I have the same problem
Don't think about a hardware problem.
I have the problem at :
- Boot windows screen : at the 'welcome"
- Closing windows screen
- Choose user screen : after the screen saver

Whenever I need administrator rights for something and the dialog pops up the screen is corrupted again, I click "yes" in the corrupted screen and I am back in the faultless screen of W7??!

I 'lower' the User Account Control and the dialog pop up for 'I need administrator rights for something' are not corrupted :sarc:



Sorry for bad english

 

[Barman58]

This may seem obvious but I would check your Drivers for the video card.

The points that you are getting the corruption appear to be related to the Aero interface - changing mode.

One way to investigate is to "turn down" the UAC to the bottom but one option so that it still prompts but does not apply the screen lock, (screen darkening).

The fact that you do not have the issue in safe mode owould also suggest driver issues

It could also be a hardware issue where the mode change is not being handled correctly but I would check driver first

 

[audiolover]

The problem happens with the default Windows7 driver and with the latest release of the NVIDIA driver so what else can be done about the driver?

 

[Barman58]

The only thing I can suggest is to try a slightly older driver from nVidia or see if the actual card maker has a driver tuned for the card.

Video drivers change so often that sometimes merely waiting a week or so will solve issues when the next driver appears.

 

[toviz]

I also have the exact same issues with the bootup/login screen and the administrator rights pop up.
In my case I have a Nvidia 7300 GT AGP card.
I got the Nvidia driver softeware updated, but made no difference.

I have also noticed that if you right click on the desktop quickly after reactivating the screen from sleep? (blanked out), you also get a corrupted pop up box. If you wait a few seconds before right clicking on the desktop its nice and clear. Thats got to be a clue...


I don't think it's purely a graphic card or driver issue, because I found this under the Heading
Designing for a wide range of hardware

Due to technical constraints in Win7, boot is always displayed in our recommended minimum resolution – 1024x768, regardless of the system’s native resolution. Today, most hardware is set to stretch the boot sequence to fill the screen, as opposed to centering it. Consequently, the boot animation is usually stretched on screens that are of different aspect ratio than 1024x768;

My native LCD screen resolution is 1440 x900, which means that its stretched as stated above.

Link to article: Engineering Windows 7 : Engineering the Windows 7 Boot Animation

*edit. I forgot to mention that I had the beta version running previously on the same video card, and monitor (although it was a different motherboard and processor back then) and did not have any problems, so really am thinking its not the video card.

 

[toviz]

Ah.....I may be on the right track about the non native resolution..
I found this comment;

"Windows 7 boot screen is extremely awesome. It's a pity it's not okay with wide screens (which are, unfortunately, the home majority)"

 

[toviz]

Just an update: I have noticed that the Microsoft Office assistant, (old version) which is a basic animation, is displayed in a weird colour.

It seems to be only the lower resolution images that have these problems??
(minimum resolution – 1024x768)??

I'm thinking its somehow got something to do with how win 7 handles VGA changes perhaps. There's just too many different display resolution issues reported with win 7 to just blame all the video drivers involved.

just found this;
"Microsoft has lately revealed that if the display resolution is lower than 600 pixels vertically, Microsoft worries the DPI Scaling will not function properly. The system will ignore the change request if users try to change the system DPI Scaling."

 

[audiolover]

I have installed my old 6800GT videocard in the system and will do a clean install of W7. I am curious if the problem is still there?

 

[Avien]

On my other computer that uses an ATI x800 XL it also has a corrupted bootscreen. Instead of the circling windows icon, it gets nice red and green interlaced bars at the top part of the screen. After it gets past that for a few seconds and through the bootscreen/bootloader, everything is fine (desktop) that is.

Again, mine is on an ATI card that works wonderfully and had no problems in the past.

 

[toviz]

I wonder if there are any connection between our hardware?, like are all the cards AGP's, or are all the motherboards using the same chipset etc

My hardware that produces the corruption is:
Intel E6300 Core2 Duo
Nvidia 7300 GT AGP card.
Screen 1440x900 LCD
DDR 2GB
Ausrock 4CoreDual-SATA2 rev2 M/Board

I also have a Nvidia 7300 GS PCIe card which when fitted to the same m/board (dual format board) does not produce the corruption.

What hardware do you have?

here is a link to a thread where I have discussed this further;
Windows 7 corrupted login wecome screen & User Account Control box displays

 

[Avien]

My old card is in fact AGP. It uses Catalyst 9.3, as the newest versions do not support that card. Might be that so called AGP powerbug?

 

[toviz]

Ah thats interesting.

I see dwelche post#6, also has a AGP card.

So if audiolover has a AGP card? then we may have the common factor.

?


At the end of the day if you drop the UAC one notch to no dimming and change the corrupt welcome screen to one the resolution of your monitor its almost gone.

Re power bug: I don't think its that because the error happens on the lower images only not the high ones, and if it was that, why would installing a new O/S on proven H/ware cause a change in power requirements?

This leads me to mention something else:I have run win7beta with my AGP card without any errors on another m/board using an AMD cpu, same power supply etc. That makes me think BIOS........

 

[Avien]

Well now that i think about it, it corrupts now on another monitor, but did not corrupt on my current monitor when i was using it a month ago. Guess it is monitor related?

 

[audiolover]

I do have an AGP card, so the common factor might apply! I even bought a new PSU just to make sure that power was not the problem.
I tested it with my other card, an Asus 6800GT and it produces same problem!