Yesterday my laptop started making this weird noise -- a faint whine with stuttering interruptions, almost like high-pitched radio static but nowhere near as loud. At least I think it started yesterday; since I often wear headphones when at the computer, it's entirely possible that it's been going on for some time. Anyway, I googled laptop noise issues and came across a suggestion that I clean the fans, so I grabbed my canned air and blew the dust out of the machine and cooling stand. That caused the machine to stop for a little while -- though it could just as easily have stopped due to the reboot, or because I had the computer off for a bit, or whatever -- but it started up again a little later. Fearing hard drive issues, I ran the dskchk utility. It yielded no errors -- not that that necessarily means anything -- so I don't think the hard drive is failing.

Once the dskchk utility finished, I promptly turned the machine off and went to bed. Now I'm using the laptop again -- and after about 20 minutes of relative silence, the noise came back. I really don't know what to make of it! I'm thinking the fans might be dying on me, though that wouldn't explain why the machine is running several degrees cooler unless they're spinning faster in their death throes or the winter is responsible for the temperature drop. (I'd attribute it to the reduced amount of dust, except that the machine was apparently running cooler even before I broke out the canned air.) According to Notebook Hardware Control, the CPU is even running cooler than the hard drive, which almost never happens. Granted, I'm usually running Firefox with upwards of 50 tabs open and right now I've only got four, but still.

Don't die on me, laptop! 🙁

EDIT: I'd forgotten that I had 18kfanGUI on here! After doing some tests in which I manually stopped and sped up the fans, I have confirmed that the noise is coming from the second one. I guess that's good, since it means the hard drive is mostly safe! And the machine is running pretty cool now what with the winter and the cooling stand (far cooler than it normally ran before I got the stand), so I don't think I'm in any immediate danger of frying my hard drive. Just the same, I'll probably order a new fan this week! It looks like they're about $50 refurbished from Dell with only a 90-day warranty and far cheaper on eBay with a 30-day warranty, so I'll likely go with the latter option. I'm tempted to grab some other upgrades while I'm at it!