Windows 7 Bootcamp external/dual monitor not working

xiard

macrumors newbie
Original poster
Aug 4, 2011
5
0
I have a 15" MacBook Pro purchased 6/2011. I am running Windows 7 64-Bit Ultimate (with Service Pack 1) under Bootcamp.

I have a mini display port -> VGA adapeter (Rocketfish) connecting to a Dell monitor. The monitor is detected and usable under OS X. When I boot the computer in Windows, I see the "starting windows" screen duplicated on the external monitor (so the cable and monitor are definitely working).

Once I'm in Windows, though, the monitor loses the signal in some way. The power button, which was glowing green, is now yellow (as if the monitor needs to be woken up). It's not the same as having no connection, though; if I unplug the cable the monitor shows the "nothing is attached" floating graphic.

My cursor will move off of my main MBP display as if there is an external monitor, but nothing shows up. In my display properties, the Dell monitor is detected as a secondary display, and it is automatically setup to do monitor extending. So everything looks fine...except for the fact that nothing shows up on the monitor.

Note that connecting to a TV using mini display port to HDMI under Windows 7 works fine.

Any thoughts? Looks like people have had a LOT of issues with dual monitors under Windows 7, but I didn't see any obvious solutions.

Thanks,

David Cater
 

techguy20

macrumors 6502
Jan 30, 2010
251
0
I've used a similar adapter with Windows 7 in Bootcamp and have had no issues.

I assume you have the latest Bootcamp drivers installed, correct?
 

xiard

macrumors newbie
Original poster
Aug 4, 2011
5
0
That's a good question. Can you update Bootcamp drivers manually (i.e., separately from the OS)? It seems like when I looked into that in the past, I made sure Bootcamp was "up to date" by just making sure my updates in OSX were current. I've checked Software Update in OSX and Windows Update on the Windows side, and everything is up to date.
 

xiard

macrumors newbie
Original poster
Aug 4, 2011
5
0
Just checked on support.apple.com, and it appears the latest Bootcamp version is 3.3. That appears to be the version I have (from About Boot Camp dialog in Windows).
 

Sincci

macrumors 6502
Aug 17, 2011
252
29
Finland
Just checked on support.apple.com, and it appears the latest Bootcamp version is 3.3. That appears to be the version I have (from About Boot Camp dialog in Windows).
The latest version is 4.0 which comes with OS X Lion. You'll need to run the bootcamp assistant in OS X in order to download those drivers.
 

xiard

macrumors newbie
Original poster
Aug 4, 2011
5
0
Oh, man, I had really high hopes for that. I booted in OSX, created a CD with the new BootCamp support setup program, and then installed it in Windows. I am now running BootCamp 4.0.

Unfortunately, the behavior is the same. I also checked to see if I could now connect my laptop to my Bluetooth speaker (Jawbone Big Jambox) as an audio device, and that still isn't working either. Sad.

So to answer your original question...yes, I have updated drivers. And I still can't use an external monitor.

Thanks for the replies...any other thoughts?
 

AnonMac50

macrumors 68000
Mar 24, 2010
1,513
294
Try using the AMD drivers. For example, on my MacBook Pro (with nVidia), I just downloaded the update and installed. Also, you might have to do a clean install of the driver instead of just updating it.

Check the Catalyst Control Center first before you update the drivers though. There might be something there to help (that is the most confusing program I used though, so it might be hard to find what you need).

Also, maybe the resolution or refresh rate is over the limit? Probably not but wouldn't hurt to check.
 

Freyqq

macrumors 601
Dec 13, 2004
4,021
171
Download video drivers straight from your GPU manufacturer. They tend to be more up to date anyway.
 

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