Actually this is a problem for thousands off laptop owners from the old windows up to windows 7.
listen really carefully.
I HAVE A ACER LAPTOP WITH WINDOWS 7 HOME PREMIUM. I GOT THE SAME PROBLY.
& I HAD TO READ 1000'S OF FORUMS for THE NUMBER 1 ANSWER.
OK HERE WE GO.
.FIREWALLS like MCAFFE & NORTON if you have any or them two, turn them OFF!! they block INCOMING SIGNALs,
so you can PICK UP WIRELESS but not connect, says UNIDENTIFIED NETWORK N NO NETWORK ACCESS. Oh yh if ur finding it hard to delete NORTON because they have funny files that dont delete when you do a standered uninstall.. download something called Norton UNINSTALLER TOOL. search for it in google it on nortons website.
IF THAT DIDN'T HELP YOU

READ UNDERNEATH FURTHER
BECAUSE WHEN YOU FIRST TRIED TO CONNECT TO YOUR WIRELESS, YOU NEVER CHOSE THE RIGHT SETTINGS YOU CHOSE UNIDENTIFED THE BOTTOM AUTO CHOICE.... SHOUDN'T HAVE DONE THAT..... CHOOSE HOME... BUT NOW UR STUCK & GUESS WHAT YOU CAN'T CHANGE IT... AND SO CAN'T 1000'S OV OVER PEOPLE.
OH YEA... THE WHOLE LIMITED ACCESS REALLY MEANS NO ACCESS OVIOUSLY EVEN WITH EXCELLENT SIGNAL.
THE ONLY THING YOU CAN DO IS PAY £30.... FOR A PC DUDE TO FIX IT CUS THEY BELIEVE IT OR NOT HAVE SOFTWARE TOOLS FOR THIS EXACT PROBLEM.
I KNOW AFTER ALL THESE YEARS MICROSOFT WINDOWS STILL HAS PROBLEMS

.
IF THEIR A BETTER ANSWER OUT THEIR MAIL ME CUS I HEARD EVERY STORY OUT THEIR ABOUT THE NON CONNECTING WIRELESS LAPTOPS