Here are the numerous problems that I have been having, but I'm not sure all of them are related to each other.
1) Mouse: Whenever it freezes up, the mouse driver disappears in my tray. When it continues working again, the mouse driver reappears. What happens is I get sporadic mouse freezes for about 1-2 seconds.I have tested multiple USB mice and I get the same problems even using default drivers. I have tried using different USB ports/hubs as well as reformatting. I have not tried PS/2.
2) In the Device Manager, I realized that when my mouse freezes, under Human Interface Devices, the USB Human Interface Device disappears and appears repeatedly. Sometimes it doesn't disappear, but displays an error saying: Device could not start.
3) Opening up TaskManager (ctrl+alt+del) causes my CPU Usage to spike to 100%. Moving my mouse increases my CPU Usage by about 10%. Clicking and dragging the TaskManager gives me a spike to about 60%. Opening folders
spikes to 80%. When alttabbed out of a game, I have 0-2% CPU Usage.
4) In some games, my graphics card temperature RAPIDLY INCREASES (+20C in about 2 minutes from 52 C). If i alttab out of the game, the temperature RAPIDLY DECREASES (-1C every 3 seconds). Sometimes while playing
CounterStrike, if I alttab, I get a nv4_mini.sys error. Usually my mouse starts acting up at high temperatures, but not always.
I've tried many solutions but none of them worked. I have managed to stop the problems very briefly by reformatting. There were no problems AT ALL for about 2 months and then things started acting up. I am 90% sure there are no viruses/adware on my computer. I have run memtest as well; no errors.
If things really can't be fixed then I guess I'll have to reformat again and find out what the problem is by elimination.