Windows 7: Icon thumbnail problem & can't change desktop solid color background

My desktop background became solid black colors and can only select from solid colors.
Even if I select image it still shows solid color and thumbnail of image in
Windows 7/personalization does not work. (look at image 1 below)

another problem all folder, video and image thumbnails dont work (look at image 2 below)

and some of folder sometimes shows black square on it (look at image 3 below)


All these happened after taking word document from usb my flash drive.
Because those word documents are distorted in another computer
and their extension was .scr and i assume this may cause all these.
but I use Eset Smart Security 5 and no warning and after I scanned pc in
safe mode with Kaspersky 2012 and they found nothing.
I tried Malwarebytes and Spybot - Search & Destroy.
I also tried Combofix 4-5 times and it deleted some file but
problems are still present please help me I want to solve problems
without formatting..



My system:
Windows 7 Home Premium (Activated, not a copy license)
Nvidia Geforce 9600 GS driver is updated.





[img]http://s16.**************/efkzsac2t/capture_20120517_153435.jpg[/img]

[img]http://s16.**************/etmbrvw6d/capture_20120517_153753.jpg[/img]

[img]http://s16.**************/npx3vtmsl/capture_20120517_154117.jpg[/img]

You may need to open the "Command Prompt" and execute:

sfc /scannow

Tutorial:
SFC /SCANNOW Command - System File Checker

Make sure those Word docs have doc or docx as their extensions.

Thanks for reply,
I also tried sfc/scannow but it didn't solve problem
and after suspicon I deleted those word docs.


Any other idea ?

Welcome aboard, semih7106

If you disable thumbnail preview , what is the situation ? Can you see the generic filetypes icons, and access the wallpapers ?

Thanks for reply

I found this tutorials before and checked options
and enable, disable option is like showed in tutorials.

If i disable thumbnail option, generic icons are showed
and yes I can access wallpapers, folders with no problems.

In problems i mentioned in first post, background problem really disturbs me
I can change background with an image by click right mouse/set as background
but after restart of windows it becomes solid colors again.
In personalize section image are showed like below image and
selecting image no affect on changing background.


[IMG]http://s16.**************/efkzsac2t/capture_20120517_153435.jpg[/IMG]

Sorry for it, but I have no other suggestion for you other than Clean Install Windows 7 . As I have experienced earlier, even a repair install also fails to resolve this issue.

Thanks for your suggestions anyway.For now I dont want to format
therefore i try to find solution and found solution for background problem here

Cannot change background from solid colour

I install Irfanview and change background and after restart it didnt change to solid colors.

I assume that you set picture file types to be associated with IrfanView?
Perhaps your file associations got screwed up.

Tutorial
Default File Type Associations - Restore

You could try resetting the scr file association.

Thanks for reply,

I tried it but it didnt work
I am very curious now what is the damn problem

That is really strange.