How do i fix my screen?

How do I fix my screen? How do I fix my internet Connection?

• I originally downloaded the Windows 8 Pre releases and didn't like it. Then I wanted my Windows 7 back and because my computer came with it pre-installed I did not have the digital media or the disk to download it. I used a student ID and got it from Digital River. After downloading it the screen looked different and the resolution was different. I went to control panel then to screen resolution and made it on how it should be. It still wasn't the same as it used to be. I have also tried the drop box and that will not make a difference either. I have tried everything. The screen does not look like a HD LED monitor and it also looks zoomed it. I don't have the Service Pack 1 or 2 installed because after downloading Windows 7 again it wouldn't let me connect to the internet Heres my second question. I have a great computer basicaly brand new and the company still supports the model. It has a wireless adapter built in. I used to always get a wireless signal on it. When I re installed Windows 7 the wireless stooped working and it said it doesn't support it. It will only take a wired connection and I don't know why. PLEASE HELP!

• Answer:

  you didn't reinstall the drivers. go to the manufacturer's website for ur computer, go to your model of comp, go to software and downloads, download all the drivers, then install them. right now indows is using generic drivers for the components it has them for (like display) and not using those components it has no generic drivers for (like wireless).