Computer not connection to internet and having some graphical issues

Hey all, I was pointed to these forums off another tech website because I was having some issues and it's they thought they might be due to the fact that I am running Insider Edition. The first of my two issues is the most annoying internet issue I've ever had, it seems every other time I boot up my PC it won't connect to the internet unless I a) restart my computer or b) restart my modem, all the other computers and devices on the network run just fine so it does seem to be an issue with my computer. The second issue is a graphical one, it probably isn't related to me being on an Insider Edition but if you could help anyway that would be cool, I recently got a new monitor and was changing the display settings on my computer when images started looking super grainy and pixilated, my desktop background has small black dots all over it, I know this isn't dead pixels because when I open and application and drag it over the image with the spots they don't show up, if anyone knows what setting that caused this is so I could change this that would be swell! I'm running Insider Preview 14971.rs_prerelease.161111-1700, I know this isn't the most recent, I'm having trouble installing the newest one. My monitor is an Asus VC239H running off a GTX 750 Ti.


Update: I just reset my monitor and it fixed the graphical issue some but I still think a Windows setting could be changed

Thanks,
Prism