I have a Toshiba laptop that has this chipset in it for wireless. (Satellite P875-S7310)
With Windows 8, going into the Adapter Settings and turning off N mode (802.11n) solved a lot of issues.
Since upgrading to Windows 8.1, it keeps dropping out, trying to connect to other networks other than my own and sits and spins when I have to try going back to mine. Router is a Linksys E3200 I have gone into the network adapter settings and again disabled the N mode.
Problems persist (knocked offline, limited internet...)
Did the Intel Update service and allowed it to update to newest drivers. No change
Noticed on here the suggestion to go into Device Manager , select the Wifi and update the driver. When I do so, it auto detects 7 drivers that all read Intel Centrino Wireless-N-2200 (which one?)
What else can I do to make this thing stable? When it drops the connection and I have to re-join, I get the "Windows is taking longer than expected..." then finally does, with no internet or limited.
Laptop is 22 feet away from router. Again, this all worked fine in 8 by disabled 802.11n mode
The difference here could be related to the fact that we do not have a driver for Windows* 8.1 at this time. Perhaps using Microsoft* driver may give different results.
I went into
Device Manager > Network Adapters > Right Click on Intel Centrino card > Update Driver
Browse My Computer for Device Drivers > Let Me Pick
I had many drivers that had (Intel) at the end and one with (Microsoft)
I will try that for a while and see what happens.
Here is what I had to do on a Lenovo T430 with Centrino Wireless-N 2200 adapter and Windows 8.1 x64:
Since my laptop has BIOS options for WiMAX and Wireless WAN, I entered the BIOS and went to Security and the I/O Port Access and disabled the WiMAX and Wireless WAN options as I do not use either.
Go to System screen and choose Device Manager
Right click on the Centrino Wireless-N 2200 and choose Update Driver Software
Click on Browse my Computer for driver software
Click Let me pick from a list of devices...
Select the Intel Centrino Wireless-N 2200 (Microsoft) entry and follow screen to complete install
Right click on the Wireless-N 2200 adapter again and choose Properties
Verify driver (after all Windows updates)
Click on the Advanced tab
Select 802.11 n Mode and set to Disabled
Select Ad Hoc QoS Mode and set to WMM Enabled
Select Wireless Mode and verify it is set to 3. 802.11b/g
Click on the Power Management Tab and uncheck box Allow the computer to turn off device...
Where this is a development machine, I also adjusted the power settings as it is connected to a docking station and on all the time.
Wireless Adapter Settings set to Max Performance for Both
Sleep settings all set to Never for all sub components
PCI Express - Link state setting both set to Off.
Hope this might help your case but I have had no other issues on my Lenovo.