Is there any air coming from the vent out? You may just need to get a can of air and do some cleaning. The intake is generally on the bottom and the vent out on the side. Blow air, at a safe distance, from the bottom intake, with the unit powered off. Sometimes dust build up will stop a fan. IF the fan is dead, I'd suggest getting it replaced asap since overheating can and will kill a CPU.
so i have a hp pavilion dv7 2043cl laptop i got in june 2009. until now, it had no problems running modern games. i was playing arkham city, portal 2, farcry 3, with NO problems. however, a few days ago, everything started to lag. and then i noticed that the once obnoxious noise of the fan has suddenly stopped.
now my labtop is quiet, which is nice, but i feel like the CPU isn't going as fast as it should. browsing a website takes 100% of the cpu power right now.
is this a fan/cooling issue? or is my cpu/memory just dead?
any ideas/suggestions would be extremely helpful