Hi all, got one that seems strange (well to me anyway).
I replaced the motherboard in an HP DC5100 tower yesterday. Got the new Mobo from HP so no problem there I shouldn't think. I installed it and when I put the PC on, I got a screen telling me about a drive - diskette error. It could see the RAM and the HD though. The error seemed to be referring to the computer not having a floppy disk drive, (which it doesn't), so I pressed F1 to save changes, and it booted. All this time the fan seemed to be spinning quite fast and so very loud. the computer booted up to the login page. At this point I decided to shut down, and then power up the computer again hoping that this time the fan wouldn't be so loud. I did, but the noise didn't stop. I then tried to see if I could load up Windows (XP) alright. This it did, all the programs and documents are on there, but so was the noise, and it was constant. In the end I decided to shut it down. I haven't turned it on since for fear that it'd be making a bad situation worse.
To describe the noise, I would say it's similar to the noise made by a switch, or more accurately, like the noise a Proliant ML150 server makes in the first 3 - 5 seconds after you push the "ON" button.
Is this a case of overheating. The only thing I would be iffy about in my installation is greasing the processor - I did, using all the grease that HP supplied, but I personally didn't think it was enough. Could it be any other thing? All help appreciated please, cheers.