Why Apple Thunderbolt Display won't work on BootCamp Win7 64-bit while being plugged to MBA?

Hello,
I have MBA (latest) & installed win7 64-bit in BootCamp, I do also have Apple Thunderbolt 27" Display.
When I disconnect the ATD and re-connect it in Mac OS X, it works fine like a charm, but when I disconnect then re-connect in BootCamp, it doesn't work at all whatsoever, in fact, I have to restart my MBA (while thunderbolt is connected) to make it work in BC, this is the only way to make it work.
So, my question is; If I disconnected ATD in BootCamp then re-connected it, why it won't work?
I've googled everywhere about this issue, but no luck.
Any idea?

to calculate how much video ram is needed one
take
the vertical number of pixels and * with horisontal number of pixels and * with 32bit colour which is 4 bytes
so if it's the 13" macbook air
1440 * 900 * 4 = 5.184MB for main display
+
2560 *1440 *4 = 14.75MB for second display
sounds like the intel hd 5000 would have that as dedicated memory even if the windows driver did not allow to use shared system mem as extra
could be a problem with the driver for windows
maybe a person who ran a setup like yours would have more to contribute with
my setup is an imac 21" with amd video card and a 24" dvi dell monitor and that works fine in windows so it's a different animal altogether

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Hi
I have just brought a W540 with windows 8.
I am trying to connect two apple thunderbolt displays (daisy-chain) to the thunderbolt port on the W540.
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In advance thank you

I'm not really familiar with the Thunderbolt implementation on the W540, so someone else will have to pitch in.
Does the display work properly with any other machines?
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If I attach my Macbook Air it directly shows a second screen for my Air (so the screen is fine).
How can I enable the second screen for my iMac ?
Love to here.
Walter

Try Command + F2
You should be able to make it work from there

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Thunderbolt ports and displays: Frequently asked questions (FAQ)
https://support.apple.com/kb/HT5219
https://www.apple.com/thunderbolt/
rMBP, Bootcamp off thunderbolt drive - MORE COMPLETE SOLUTION
http://forums.macrumors.com/showthread.php?t=1414769
https://discussions.apple.com/thread/4232557
Boot Camp: FireWire devices may affect Windows 7 responsiveness if connected to an Apple Thunderbolt display
http://support.apple.com/kb/TS4190
This looks promising:
http://www.macwindows.com/bootcamp5.html
Thunderbolt problems with Windows 8
TIP: Fix for Thunderbolt problem with Windows 8 in Boot Camp
Boot Camp users who updated Windows 7 to Windows 8 may find that a Mac booted with Windows 8 does not recognize Thunderbolt . According to a new Apple tech article, the problem is an incompatibility with the Windows 8 Fast Boot feature (also called Fast Startup). The workaround is to disable Fast Boot using the Windows Control Panel.
Here's how:
In Windows 8, open the Control Panel. (You can move the mouse to the upper-right corner to activate the Charms bar, click the Settings icon, and then select Control Panel.)
Select Hardware and Sound.
Under Power Options, choose Change What the Power Buttons Do.
Under Shutdown Settings, uncheck the Turn On Fast Startup. Checkbox.
Click Save and then restart the Mac back into Windows.
After restart, Windows 8 will recognize Thunderbolt devices attached to the Mac.

Why Apple Thunderbolt Display won't work on BootCamp Win7 64-bit while being plugged to MBA?

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