|Your Graphics card, you keyboard, your dial up Modem if you have one, Your Ehternet card if you have one, your wireless interface of you have one .you4 real time clock, you memory refresh are all constantly generating hardware interrupts; every 15 milliseconds. |
If your computers is slowing down,I should look a little further than hard ware interrupts. It is vry unlikely that is the problem.
Look in Task Manger and see which processes are using the most CPU time.