Computer Freezes Randomly / Keyboard Becomes Disabled And Unresponsive

i am currently unable to work on assignments on my own computer or enjoy games because it freezes completely sporadically requiring a hard boot. essentially the computer freezes on me and the keyboard becomes disabled and unresponsive. the mouse cursor on the screen slows down, like the sensitivity was turned down 95%, and moves sluggishly, and then i know the freeze is coming. the computer desktop freezes completely, the keyboard becomes disabled and sometimes the screen turns a faint transparent white depending on what application i am running. the cursor then turns into an animated hour glass that i can move around the screen totally normally, with no lag, but everything is unresponsive. i then need to do a hard boot and end up frusturated, tempted to through my computer at the wall.i've scanned the computer with at least 10 different reputable antivirus programs and i have repaired all the registry errors. i've uninstalled programs i no longer need and searched all over solutions, to no avail. [code] i looked at event viewer to try to see a log of the issue but the only error it reported was id 41, from the hard boot. when i'm on Internet and it locks up permanently, the Internet video continues to play.also the freezing is totally random and sometimes i can go for 5h without it happening, other times it freezes up within 10 minutes. usually it freezes up between 10-30 mins of system starting up.