ok i dunno what the hell this is but when i turn on my comp all of the sudden it makes this high pitched ringing noise like one u hear when u listen to music too loud. IT wont stop!!! i turn off the comp
then on again and there it goes. The last thing i did was install 3d mark and when i do benchmarks the noise stops
Not sure what it is, but it may be a sticky fan. To fix this, carefully pull the stickers off your fans and even more carefully add a drop of oil. Rotate the fan blades around for a bit by hand, wipe any exess oil off, and then carefully place the sticker back on. Make sure your fans are not attatched when you do this, you do not want to get oil on your hs because it will reduce its cooling capacity.
My sister's computer just had this same sort of noise and it was coming fromt the powersupply. Luckily for her I had a spare PSU sitting around and now here computer is much quieter. So I would check the PSU fan.
<b>Just because I like AMD or Intel more at a time because of one product compared to another, does not make me a fan boy, it makes me a person who is able to make a descision for myself.</b>
I'm almost positive it's the monitor. You're probably running an older monitor at, or near, it's max resolution and frequency. The same thing happens on mine. When it boots up, it's at 800x600x60, so is nice and quiet, but when windows starts it goes to 1024x768x60 (it's max setting). When this happens, it makes that ringing sound. I suggest you try a different monitor or different settings and see if that does it.
My monitor is an 8-year old POS. I'm surprised it still turns on. I'm going to be getting an LG or Viewsonic Flatscreen display, but I also need a new desk to hold it. Gonna be a couple months before that happens