I am experiencing this odd problem right now, my windows 7 pro 32bit is very slow and laggs too much. I've been using this computer for 3 years I think, in-tack all original parts are still working since the day I bought this computer. But just this month I am experiencing this problem. Like when I watch youtube videos there's a crunchy sounds and when I scroll down its very lagg and made the crunchy sounds even worst and when I go to a website that plays a video on the homepage the system become very slow and scrolling down is pain in the ass, even on facebook when I scroll down it laggs too much like when you scroll down to a page its stop..stop... not the usual thing I experienced before, this is very weird.
I tried to scan my computer with anti-virus/malwares, but found nothing. I even tried to do a clean install (3 times) I updated the OS as well, but still no luck the problem persist and I am really confuse how to fix this problem. I even swap other Hard disk because my friend says it may be due to my HDD because it was 3 years old then, but still the slowness and laggyness of my system is still there and this problem was not around years agon just this months or weeks only I came to experience this. I am really bothered how to fix this. I hope you guys can help me with this or give some insights and recommendations on how to fix this things up.
EDIT: I've also tried to downgrade the OS, I use the Win7 Home Premium 32bit just want to see if it will solve the problem, but no luck again :<
Dual core processor: 2.80GHz and 2GB DDR2 RAM and 1GB DDR2 video card.