timmytom1 said:
As the title kind of explains ,my computer keeps making this clicking noise ,nothing seems to be really affected except startup which goes really slowly also sometimes it won`t let me log on saying it can`t connect to the "system notification service" (or something along those lines) so my question is ,should i really be panicking about this?? or not?? and prehaps slightly more to the point WTF is it???
Could be a fan obstruction or hard drive issue. First, check all of your case fans, the fan on your power supply, and the CPU fan for obstructions of any type. While you have your computer open, get a can of compressed air and clean out any dust buildup.
If that doesn't fix anything, run a hard drive scan using step 3 of this tutorial [http://www.microsoft.com/atwork/maintenance/speed.aspx] and see if it turns up bad sectors-these could be causing your slowdowns.
If the clicking is coming from your hard drive, and you have a lot of bad sectors, it's possible that it has a mechanical issue. If that's the case, you should probably back up your data and replace the drive. New hard drives aren't terribly expensive, and losing your data is a pain in the ass.
Hopefully it's just a fan issue.
Edit: the optical drive could also click, so take any CDs/DVDs out before you check for the noise again.