Uhhhhhhh huh have you looked into wiping your laptop and doing a reinstall without all that bloatware? and upgrate the memory etc? And dont expect much from a celeron/semperon etc.
You cant ove....... yes.. you can overclock a hdd, just run FDisk and let it.. do its work
You may want to explain what wiping is to this guy before he gets out the Windex!
He means reformating the hard drive and loading just the OS (Operating System)....Of course I'd be surprised if you even have an OS Disk....Most laptops have or have you make a recovery disk(s). Which wouldn't help because you'd be re-installing the "bloatware".
Being new to this as you say.....maybe you have friend or someone who can help you out that is near by, before you try anything before you know what you're doing......I'd hate for you to read these posts and start attempting anything on your own. Because asking if you can over clock a HDD pretty much tells everyone you're a noob without having to say...."I'm new at this". I'm not dogging you for being a noob...we all had to start somewhere. Being interested in this stuff is cool, and over time you'll learn more.
I would recommend uninstalling programs you don't use, but then I take it back...because I'm afraid you'll remove somthing you really need. Do lots more research! Good luck!