Help needed with some pc problems (3 current issues)

Hello, I would like help on the issues detailed below. If anything is unclear, please request for an explanation on the specific thing with which is unclear. I will try my best to clarify the point, which did not get across.

These are issues, which I would like to be dealt with, and resolved:

1. I have a problem with my windows genuine advantage. The problem is that the program is buggy. I would like to know how to fix the program. The reason I say that it is buggy, is because it randomly shows that my version of windows as faulty. While at other times, it shows my version as genuine. I can log out and turn off my pc several times, but sometimes when I turn my pc back on, the problem comes up. I would like to know how to fix this problem with out wiping my system clean. Thank you for your time, and I hope to hear positive feedback soon.

2. I have a weird occurrence with a web site, which I have visited before many times in the past. I recently visited the site in question today, after much time has past since I last visited the site. I did not recall what the site name fully was, but when I typed in part of the sites name into the explorer's address bar, auto filler came up, from my documents. I clicked on the auto filler, and came up the site, but it was from my pc's history. This is where the weird problem occurred. The problem is that my mouse cursor was flashing, and disappearing when I left the cursor in one place. The mouse cursor flashed as I moved it across the screen. The flashing and disappearing went away once I logged in. What I would like done with this issue to find out if the above explained event is a serious problem or not. Either way, I would like assistance on fixing this problem, as it is the first time it has occurred to me. The specific web site I am talking about is http://spinsplace.19.forumer.com. Thank you for your time, and I look forward to your feedback upon this matter.

3. When I log out of my email account at home, I do not see that the "sign out" appears as it does when I log into and log out at other places. Such as school, or a family members pc. I would like to know why this is, and how I can have the "sign out" feature, appear when I use my email from home.