Processing light ends with a click

My computer is custom home built and is now approximately 4-5 years old. I have been upgrading it slightly every now and again when I have the money.

I have started playing TF2 again recently which strains my computer. However since last night my computer has started to click. The light on the front panel of the case will come on with high amounts of processing, as with most computers. I have noticed though that when the light goes off, a 'click' can be heard. I don't know whether it could be a problem with the motherboard or just a loose connection somewhere. But surely it shouldn't click?

This is even more concerning to the ear as the light goes on and off very quickly when playing games or using high resource programs as everytime the light goes off the click can be heard.

Any advice, ideas or suggestions as to what it could actually be and/or how I could stop it?

Thanks in advance

Wowdude

Oh my gosh really? Dam. i'm on the computer at the moment. University is just about to start so I kinda need to get this done asap. I have a 500Gb external harddrive (same size as my internal) and my internal isn't full so I will back-up my computer to the external HDD.

Thanks for the quick reply and yes I have been playing WoW for many years...since i've had this computer. The HDD has also taken a lot of thrashing from things like a lot of defrags, scanners, registry repair etc. My last HDD died not so long ago as well....maybe a need a SSD to play WoW?

Dammit, why are modern HDD so flimsy. I remember when I had my 1st built computer the 64Gb HDD never died. I'm sure I still have it somewhere isn't just too small in capacity to use. I'm uninstalling things at the moment to fit my Internal HDD contents to my Ex HDD and praying it doesn't die inbetween. I also use steam....another HDD thrasher with constant updates.

Thanks so much for your help. Been exactly what I needed and saving me losing my data! Lots of gold stars for you!!

I'll let you know how it goes.....as/when it goes.

Hey there!

I've just changed over from my HDD to a new WD 1TB that came today. Installed Vista, then windows 7 over the top, loaded my disk image onto the HDD. No problems so far. The old HDD is still going though so I can still pick up the rest of the files I missed after I made the image.

Thanks again for the help. Saved my ass (and just as importantly my data!)