computer help

OneTenAyEmm

alrite so i just formated my computer, it is running vista. the reason i formated it was because the physical memory was out of control somtimes around 80-90%. ok so i format the computer. i get back on Dl crossfire, dl gamebooster, dl vent, dl google chrome. thats all i still have on my computer i have 110 gb of free memory. but still my physical memory is at 78 % and also while i am typing this cpu usage keeps spiking to 100% then back down to around 16.

soo please if any1 knows how to fix this please let me know because THIS SUCKS.