Delete virtual screens (screen resolution interface, windows 7)

As shown below, my computer setup has 4 monitors:
1, Laptop
2. Large screen.
3. Virtual screen (doesn't exist physically).
4. Virtual screen (doesn't exist physically).

Question: How can delete no. 3 and 4 in the setup?
4Screens
LVL 34
Mike EghtebasDatabase and Application DeveloperAsked:
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David Johnson, CD, MVPOwnerCommented:
what you are seeing is because your cpu has graphics included and an internal graphics display and each is being used at this time.   Are you in a docking bay and what is your laptop model and version
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
No docking. And here is the information on my computer:ComputerSpec
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nobusCommented:
it looks like a Toshiba laptop
it probably has software installed for handling the video

may i ask why you want to delete the non-existing  ones?  any problem?
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David Johnson, CD, MVPOwnerCommented:
go into device manager / display adapter and remove all but the Intel HD Graphics
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
@nobus,

Yes. There is a major problem. This is how the problem occurs:

Sometimes, some open windows move to virtual screen 3. I see it in the task bar but when I click it to work with it, it flies into the virtual screen 3 where I cannot see it because screen 3 doesn't exist.

(I have figured out the after alt-tab making sure that particular window I am trying it to have in either screen 1 or 2 has focus, I hold down window key and click on left arrow one or two times causing the window in question move where I can see it).
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David Johnson, CD, MVPOwnerCommented:
have you ever connected to a projector? used logmein or other screen sharing software?  If so uninstall these items
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nobusCommented:
did this happen recently?  then a system restore can set you back
you can also check the installed programs  - and look which ones are monitor related, or video card  related
updating your video driver can help also
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
re:> have you ever connected to a projector?
No.

re:> did this happen recently?
I have switch sharing one large screen with two laptops. It was working pretty good for a longtime.

Then I attempted to share the printer via this switch. I tried different configurations but it didn't work. I gave up and attempted to start all over again and go back to the original setup I had for a long time. In the process I got into this problem.
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David Johnson, CD, MVPOwnerCommented:
if you go into control panel / device manager / display adapters and in action show hidden devices and then uninstall all but the current display adapter, do the same in monitors and then reboot do you get the same results.. Please show a screen capture of device manager / display adapters
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nobusCommented:
>>  Then I attempted to share the printer via this switch  <<   it looks like this was the cause
you probably changed a setting, or deleted something too much

if unsure - try a syystem restore, as i suggested
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Windows 7

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