To see if it's hardware, try some USB or Ethernet Wifi-dongle.
To see if it's hardware, try WiFi after booting from a Linux disk (not guaranteed to work without drivers)
To see if it's related to the router, try WiFi at another location (friend, family member, public hotspot).
To see if it's software or settings, try going back to factory conditions. Make an image backup before you do, so you can easily go back to the current situation if it makes no difference at all.
I've never posted here before but I'm having a lot of trouble and would like some help.
So I'm renting a room in a big house in Dunedin and the wifi here is the fastest and best I've ever had but recently the wifi on my laptop drastically slowed down for seemingly no reason. Pages and stuff usually load but it takes a very long time and if I try loading more than one page at a time then it might not load at all. I've checked both my phone and tablet and there is no problem, and I haven't noticed anyone else here complaining about the wifi, so I think it's probably a problem only for my laptop.
According to my wifi status thing, my speed is 65mbps. I've run a speed test though, and according to it, my ping is 110ms, my download speed is 0.19mbps, and my upload speed is 0.18mbps. I don't know a whole lot but that doesn't sound good.
I've run multiple scans for viruses and malware, mostly with avg and spybot, and found nothing. Also run trouble shooter. Nothing found.
I typically use google chrome but I've checked internet explorer as well in case it was a problem with the browser and it was slow too. I tried to check firefox as well but I didn't have it installed and it took so long downloading installation components I got irritated and gave up.
I've spend some time googling solutions, but haven't found anything that fixed the problem. Since it's only a problem with my laptop, which no further away than my tablet or phone, I'm fairly sure it has anything to do with the router or modem or whatever, and I don't even know where it is in this house anyway.
My laptop is an HP envy with windows 8 if that helps. I don't know that much about computer stuff. If you think you know a way to help, please explain in a way that's easy to understand.
Up until now I've had no real problem whatsoever but it's been a week like this and I rely on the internet a lot so I'm getting super frustrated. Please please please help.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic