Another possible solution...
If after doing all these steps you are still having constant disconnects try this:
1. Uninstall the Intel Wireless Pro software (IF and ONLY IF your pc and/or laptop has an alternate program that manages your adapter's connectivity (Ex. In my case HP Wireless Assistant)
2. go to your router's configuration page (enter the IP address used by your router to access it through IE or FireFox)
3. Remove the security key, reboot your router
4. And see if your adapter obtains the signal and connects to your router
5. If it does, place back the security key.
**Also VERY important; make sure your router's ip lease time is at least 24hrs (or 1440mins) and not for example...3hrs. I have seen MY router's ip lease time set to 3hrs and I have reason to believe that allowing your router to constantly change the ip address on your device is also means for constant disconnects in my personal experience.
6. Reboot your router
7. Configure the adapter with the security key
Now you should be connected without constant drops.
Hope this also helps.
Would like to have some feedback on this if you don't mind.
Really happy to hear that this actually worked for someone else. I understand the pain and fustration you were going through having to the reset your router because of constant drops.
Another little piece of advice. You should save the steps in a notepad document or word document in your backup drive or flash drive. That way if you ever have to reformat your laptop for whatever reason, you'll know where to look.