My Dell 15" laptop has begun to make a noise after running for about 1.5 hrs.
At first I thought it was the fan going bad (bad motor bearing?).
Kind of a rattling sound. If I shut off the laptop for a little while it will restart
without any noise. But after an hour or so the noise returns.
Or could it be the HD failing? I can't tell where the noise is coming from, without
disassembling the laptop.
Fan or HD, how can I tell the difference? Btw, apart of the noise, the laptop works perfectly.