Are you still having issues?
I know it is frustrating. If you get an ethernet connection then you can narrow it down to the wireless side. The issue could be the way it connects to the router, radio interference, poorly written driver, or 3rd party drivers or software that breaks the driver.
Common issues are third party anti virus software and manufactures connection software.
if you PC is less then a year old Toshiba should be fixing on it. If they say its windows ask them which part and how is it that millions of PCs connect to the internet just fine and use windows 8.1
No, I'm not having any more Limited WiFi or other connectivity issues at all anymore, I fixed it myself.
Well, in answer to your Question, I don't believe MILLIONS of 8.1 users are connecting 'just fine'... I believe there are THOUSANDS that are NOT connecting and they just don't have the expertise, PC Savvy or 'time' to find this Forum...
This IS a 'software' issue... I'm in total agreement with you on that... and Microsoft writes the software... it is definitely a 'software' problem within Windows 8 and 8.1 conflicting with Network Adapter Drivers, Routers, what have you ... (that are not faulty)...
I've been reading FORUMS all over the Internet, (Not just this MS peer to peer Forum) and far too many People with brand new Computers are having this Problem... and MOST of them report their OTHER devices (Windows 7) have no problems connecting... just the 8 or 8.1 operating System seems to create serious connectivity issues... so, based on MY Research, this is a Microsoft issue.
Here! Google
windows 8.1 wifi limited
About 915,000 results (0.38 seconds)
I think this pretty much 'sums' it up....