Windows 7 Pro on iMac (mid 2011) and network slows down

We have an office with about 8 mid 2011 21" iMacs running Windows 7 Pro courtesy of Bootcamp. The machines boot quickly and all programs open quickly. They each have from 2 - 4 mapped network drives to a 2012 Windows Server 2008 R2 HP GL380 server on-site and are wired with Gig Ethernet HP business class switches). The users' Documents, Desktop, and a couple other directories are re-directed to the file server using an Active Directory Group Policy Object (GPO).
A couple of the computers will regularly start to slow down after only 20 or 30 minutes of use. The rest have occasionally experienced it but it's always independent of others experiencing the slowdown. The computers with the more regular slowdowns I've also booted into OS 10.7.x and the transfer rates to the same file server are fast and consistent. BTW, all computers are current on Windows updates and Apple updates.
I've tried some of the suggestions I found here: http://www.neowin.net/forum/topic/950538-running-windows-7-via-bootcamp-on-mac-m ini-slows-down-over-time/
1.)
Disable all property's that has something to do with "Offload" under advanced on the nic properties.
Also disable "Recieve Side Scaling".
And set "Speed and Duplex" to auto.
2.)
Turn off windows feature "Remote Differential Compression" (Uninstall) under "programs and features".
3.)
Run fallowing command in cmd:
netsh int tcp set global autotuninglevel=disabled
netsh int tcp set global chimney=disabled
i ran disabled on every setting i could.
so it looks like this now:
C:\Users\tab>netsh int tcp show global
Querying active state...
TCP Global Parameters
Receive-Side Scaling State : disabled
Chimney Offload State : disabled
NetDMA State : disabled
Direct Cache Acess (DCA) : disabled
Receive Window Auto-Tuning Level : disabled
Add-On Congestion Control Provider : none
ECN Capability : disabled
RFC 1323 Timestamps : disabled
4.)
Uncheck fallowing under your local area connection properties:
Link Layer Mapper I/O Driver.
Link Layer Responder.
With all of that said, do any of you have any suggestions of what to check?

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Win 8 pro to win 8.1 pro on Imac mid 2011

Hi Community!
I'm experiencing the same issue as this thread https://discussions.apple.com/message/23429321#23429321
But it's on my Imac mid 2011.
I had windows 7, I upgraded with a windows 8 succesfully but when I want to update to 8.1 I have a black screen at the end of the installation (no lights) exactly like the computer is Off. When I reboot it restore to win 8
So I decided to restore windows 8 with a fresh install (all programs and files deleted) and bootcamp 5 installed before.
I have the same issue , I thought the problem was because of one of my drivers.
But even with a brand new Win8, with last update, The update 8.1 give me this **** black screen!!!
I tried with last AMD HD drivers in case it was the graphic drivers.
I really don't understand what happen!!
I have two sort of error code when It restore to win 8
0x1900101 - 40019 or 0x1900101 - 4000D
Does anyone have a successful update to win 8.1 with an Imac mid 2011?
I try to install with a complete win 8.1 DVD (no update) I will work?
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Well, I have finally figured "my" issue out. For me, it was the video driver for my 6970M adapter. The real kicker is that the driver provided by Microsoft during the windows installation which correctly identified my device was NOT compatible with 8.1 The driver provided by Bootcamp driver installation was NOT compatibile either.
Basically, you have to uninstall the display adapter and have "delete the driver" box checked in device manager. Leave it like that, do NOT reboot and install 8.1 The incompatible driver will put itself back on there again but, at least you'll be able to get into 8.1. You just have to uninstall that device again and go to AMD directly for the latest driver.
So, below is a more step by step of how I got my 8.1 passed the black screen issue.
I did a clean install of Windows 8.
During the installation process, select customize settings and turn OFF automatic windows updates AND turn OFF automatic driver updates.
Once at the desktop, uninstall the device AND device driver (display adapter). Do NOT reboot.
At this point I had to do windows updates to get 8.1 to show up in the windows store. However, if you have to do this, UNCHECK any driver related updates first. It will tell you to reboot, go ahead and do this. Once back at the desktop, go into device manager and make sure the display adapter is uninstalled/driver deleted or its at least the microsoft generic adapter. The point is to make sure no device specific adapter is installed.
Proceed to install 8.1. Let it go through its reboots and setup.
Once at the desktop of 8.1, go into device manager and see if the generic driver is there of it its a device specific driver, uninstall the device/driver, do not reboot.
Go to AMD (my display adapter maker) and get the latest drivers from them directly and make sure its for 8.1
Install that driver and reboot. It should work from there on out. You can then proceed to install other devices and bootcamp drivers.
This is what I had to do for my black screen problem. Its important to note that the black screen issue is common but being caused by a variety of issues. I was on the phone with Microsoft this morning and explained all of this and my steps that were taken. Its clear MS has a bad update package especially since 8.1 isn't playing well (causing black screen) with drivers that Windows itself installed during install. My fix may work for some, but not all. I hope it helps someone.

Airdrop not working between iMac mid 2011 and MBA mid 2013

Hi everyone,
This week I bought a MBA 2013 for my girfriend and myself, they see eachother when attempting to use Airdrop, flawlessly transfering files. I have an iMac from mid 2011 which will not see either MacBook AIr over Airdrop. It is quite annoying to say the least. I have read around the posts here and there seems to be little to no support for this problem, which seems to afflict quite a few people.
They are all on the same network, all have file sharing enabled in system pref. and all of them clearly support Airdrop. I have deleted and re entered my Apple ID info to no avail.
Does anyone have an answer to this problem? It seems like there are enough people to warrant intervention on Apple's part.
Looking forward to any and all replies, cheers Pluckaduck

This article explains:
Mac Basics: AirDrop lets you send files from your Mac to nearby Macs and iOS devices - Apple Support
From one of the Macs looking for the iMac, start AirDrop in Finder and get to the following display:
Presumably you do not see the iMac, so click the "Don't see who you're looking for" link. That will display this:
Press "Search for an Older Mac" and you'll be set!

I recently purchased a used iMac mid-2011 and just updated to Mavericks yesterday, but has previous owners Apple ID under app icon. It won't let me complete update without that ID and password. How can I edit this?

I've had no issues changing Apple ID under preferences, etc. But it won't allow me to just click and change user name. Just says to put in password. I'm logged in under iTunes but haven't completely changed over my iTunes account from my old computer yet. Would that be a cause?

The first thing to do with a second-hand computer is to erase the internal drive and install a clean copy of OS X. You—not the original owner—must do that. Changes made by Apple over the years have made this seemingly straightforward task very complex.
How you go about it depends on the model, and on whether you already own another Mac. If you're not sure of the model, enter the serial number on this page. Then find the model on this page to see what OS version was originally installed.
It's unsafe, and may be unlawful, to use a computer with software installed by a previous owner.
1. If you don't own another Mac
If the machine shipped with OS X 10.4 or 10.5, you need a boxed and shrink-wrapped retail Snow Leopard (OS X 10.6) installation disc from the Apple Store or a reputable reseller—not from eBay or anything of the kind. If the machine is very old and has less than 1 GB of memory, you'll need to add more in order to install 10.6. Preferably, install as much memory as it can take, according to the technical specifications.
If the machine shipped with OS X 10.6, you need the installation media that came with it: gray installation discs, or a USB flash drive for a MacBook Air. You should have received those media from the original owner, but if you didn't, order replacements from Apple. A retail disc, or the gray discs from another model, will not work.
To start up from an optical disc or a flash drive, insert it, then restart the computer and hold down the C key at the startup chime. Release the key when you see the gray Apple logo on the screen.
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HT204291 I can connect to the apple TV but I am not getting display only sound with my IMAC mid 2011 and MAC Air 2012 both with Mountain Lion OS

I just upgraded to Mountain Lion after purchasing Apple TV yesterday from Best Buy.
I have signed in on the same wi-fi network (comcast 30mbps)
I was able to see photos from my wifes Iphone but not my IMac or Mac Air
Both computers connect but I am only getting audio.
I updated software on Apple TV
I shut everything down and reset my router. My Mac Air 13" 2012 was able to see the desk top but not anything that I was doing and then it disconnected.
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WEP as a security measure is laughable nowadays. Even a kindergarten kid with a netbook can crack the password in a few minutes. Try using WPA2 if available on the device. And the Macs will be quite happy connecting with that protocol.

Running windows 8 on imac mid 2011

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I have an imaci mid 2011 and just loaded mountain lion but do not see airplay. i bought an apple tv and was told at the apple store that airplay will work and it's not there

anyone have this experience?

We need to know more about your system, please download EtreCheck and run the report and please post it on your next reply. Then we can see how your system is configured, what apps are on it and look for anything obvious. We will look forward to seeing your report.

Is it possible to take the dvd drive out of a 21.5" iMac (Mid 2011) and replace it with an SSD?

I just don't want to go through all of the mess of taking of the logic board, so I thought of this, it's the first thing you see after taking off the screen from the iMac.
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Arayeb.

Thank you,
sorry if im getting annoying,
but as you can see here:
Intel 6 Series Chipset:
Vendor: Intel
Product: 6 Series Chipset
Link Speed: 3 Gigabit
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Physical Interconnect: SATA
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Under Negotiated link speed is says 1.5 gigabit.
Does that mean the ODD is 1.5 gigabit?
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27" iMac mid-2011 running SUPER slow

Hi all,
I got my iMac a couple of weeks before OSX Lion came out and it was working great on Leopard. Then, when I upgraded it slowed immensely and struggled to do very basic things. For example, once I open FCPX my iMac will freeze for about a minute before any progress and this will occur infrequently. Even after I've closed that application completely, it'll be stuck on an insanely slow speed when performing even menial tasks (lagging a few seconds when recovering from the monitor sleep mode when nothing has been opened).
I've checked that I don't have many applications open at the time, the destop is uncluttered and the HDD not full. At the rate it is performing, I would say my more than 5 year old PC would drastically outdo my less than a year old iMac. I'm currently chalking it up to Lion or possibly the RAM but cannot be sure.
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It won't do a thing to your data. However running FCPX on only 4GB RAM that could be your problem right there. Run a session of FCPX as you normally would and open Activity Monitor (Applications - Utilties - Activity Monitor) and check to see how much FREE RAM the computer has. You will find the FREE RAM by clicking the System Memory tab. As a general rule of thumb under normal operation the system should have a minimum for 500MB of FREE RAM, if it has less it's time for a RAM upgrade. The graphic will look similar to:
While you are in Activity Monitor looks in the columns for the %CPU column. If you see a process that is using a large %CPU then you have an issue with that app. Let me know how much FREE RAM you system has please.

After the last up date for Safari (Mac OS X 10.8.5 in a iMac mid 2011 21.5 inch 2.8GHz Intel Core i7) The window don't open or they are there and only in an outline, kind of like they're behind the screen. I have also done a system update and then a syst

After the last up date for Safari (Mac OS X 10.8.5 in a iMac mid 2011 21.5 inch 2.8GHz Intel Core i7)
The window don't open or they are there and only in an outline, kind of like they're behind the screen.
I have also done a system update and then a system reinstall.
What now? incident nr, 526941222.

After the last up date for Safari (Mac OS X 10.8.5 in a iMac mid 2011 21.5 inch 2.8GHz Intel Core i7)
The window don't open or they are there and only in an outline, kind of like they're behind the screen.
I have also done a system update and then a system reinstall.
What now? incident nr, 526941222.

I have a iMac 21,5" Intel mid 2011 and I need to know if is possible I change the original 500Gb HD for a 512Gb SSD? If yes, where I find a tutorial about this? Thanks a lot and best regards all.

Hi people,
I'm typing from Brasil, sorry my English.
I have a iMac 21,5" Intel mid 2011 and I need to know if is possible I change the original 500Gb HD for a 512Gb SSD?
I intend to keep the original DVD driver and install the SSD in the same HD place.
If yes, where I find a tutorial about this?
And I will like to know if the 512GB Solid-State Drive Kit for Mac Pro is compatible with iMac.
http://store.apple.com/us/product/MC731ZM/A/512gb-solid-state-drive-kit-for-mac- pro?fnode=5f
What brand and model of SSD do you recommend?
Thanks a lot for now and best regards all.
Carlos Sgrillo
Porto Alegre, RS, Brasil

Tukaine
Sep 23, 2012 10:59 PM
Since the late 2009 iMacs came out, replacing the hard drive has caused the internal Hard Drive Fan to start running at around 6000RPM.
This is due to Apple replacing the external Hard Drive temperature sensor with a proprietary firmware and using the drives internal sensor.
Replacement drives do not contain the firmware to deliver temperature data on the temperature sensor cable.
When the iMac does not receive a good signal from the hard drive it puts the fan at full speed to protect the drive.
If you replace your drive, your iMac will initially seem fine, but soon the fan will begin to speed up to full speed. Resetting the SMC (System Management Controller) will have a temporary effect, but again the fan will speed up.
Fixes people have used in the past included:
Using smcFanControl and the terminal to set a MAX speed for the fan and writing scripts to start this after every sleep/restart.
Shorting the temperature sensor cable (Not a possibility on 2011 iMacs) this tricks the iMac into thinking the drives temperature is very low, hence slow fan speed.
Both these fixes are less then perfect and leave the drive in a dangerous situation with no protection from overheating.
Another option people try is other Fan Control software. These programs will not work for this particular issue as they often only control the base speed, and if they do control the fans actual speed they rely on the temperature reported by the sensor which is now incorrect.
HDD Fan Control
HDD Fan Control works to fix this issue by reading the drives internal temperature using the S.M.A.R.T protocol and set the fans actual speed to a value good to protect the drive.
It runs at startup and continually to always control the fan correctly, prevent the loud fan noise and protect the drive from overheating
Instead of HDDFan Control, get the free SSDFan Control
http://exirion.net/ssdfanctrl/

TS3479 I have a iMac mid 2011 with Mac OSx Lion 10.7.4. I was using iMovie suddenly today I found iMovie is not starting a window is popping up saying "iMovie requires a graphics card that is compatible with Quartz Extreme. One or more of your graphics ca

I have an iMac Mid 2011 model intel i5 with AMD Redeon HD6750M 512 MB graphic card, 8 MB RAM.
I was using the imovie the other day and down loaded some of the vedio clips from Sony camcorder.
All of a sudden today while I was trying to open the iMovie it did not a window poped up saying that
iMovie requires requires a graphic card that is compatible with Quartz Extreme................
What is these nonsence thing happening ........
Can any body provide some clue how to resolve the issue
Thanks and regards in advance
Bijan

If it was previously working then try a smc and pram reset.
If that doesn't fix it then see if vlc can handle the video.

I have a Macbook pro mid 2011 and just bought the Apple TV. While watching program or movie from any of the apps such as Watch ABC, the program keeps stopping and starting constantly.

I have a Macbook pro mid 2011 and just bought the Apple TV. While watching program or movie from any of the apps such as Watch ABC, the program keeps stopping and starting constantly.

That would indicate a network issue.
Reboot ATV and router
Make sure DNS is set to auto
Ensure router is up to date, if on wifi try ethernet
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13 in macbook pro (early to mid 2011) : after the update, computer freezes with spinning wheel every 30 seconds first with safari and now with all the applications. I don't have any programs installed and still had good enough memory on the RAM.

After the update of my 13 in mac book pro (early to mid 2011) , it freezes every 30 seconds with the spinning wheel and now it just freezes. Ive never had this problem until I recently updated. Also, I just checked now for available update ( which there was one), the update would process till the last step and it shows it cannot be expanded? Now my computer wont even restart (just have a grey screen with a cursor). Can someone please tell me what the heck is going on with my computer?
I also checked the memory and it showed available memory was over 1.5 GB. I dont have any programms installed and do not have backup yet ( dont really need it anyways)
Problems: first with spinning wheel every 30 seconds and now whole computer just freezes when I restart, it only shows grey screen after the starting sound or it takes about 8 to 10 minutes to restart.
This ALL happened right after the update with google chrome crashing. I know my apple care plan expired so I cant even go to genius bar. Do you guys know how much it would cost to get it fixed ? Or any recommendations I can do to fix this?

Try a smc reset:
http://support.apple.com/kb/HT3964

Windows 7 Pro on iMac (mid 2011) and network slows down

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