Ok guys, i got back this weekend and got on my laptop, it took forever to boot up! And when it did it is really slow opening up programs and closing them, also when i move the mouse it will go smooth then it will jump to the direction it was suppose to go, ive ran my computer for viruses, deleted recent programs ive downloaded, and freed up quite a bit of space on my computer, also i have a dell inspiron 1501...i dont know whats going on so can some1 help me?