Strange beeping coming from PC

Jango · 17 Nov 2010 at 15:56

I have been mildly overclocking my CPU from 2333MHz to 2415MHz. I did this by increasing the 'Rated FSB' from 1333MHz to 1380MHz in 10MHz increments (increasing by 10MHz then restarting computer).

When the 'Rated FSB' was at 1370MHz, my computer started up normally without any unusual noise. However, when I increased it further to 1380MHz my computer started up normally again, but a strange beeping noise kept coming from inside the PC case. It lasted for 5-10 minutes before stopping.

My CPU temperature has gone no higher than 52'C during this overclocking.

Does anyone have any sort of explanation for why this is happening?

citizenx13 · 17 Nov 2010 at 16:02

were the beeps in a sequence?
Google "beep codes" for your motherboard would be my advice

xiphrex · 17 Nov 2010 at 16:02

When the PC was beeping did it still perform normally? i.e. boot into windows without problems?

Or is it beeping with a black screen?

Jango · 17 Nov 2010 at 16:10

The beeps were continuous and did roughly 15 beeps every 10 seconds (roughly 1.5Hz), and go on for roughly 6 minutes 40 seconds (400 seconds).

Therefore:
Total # of beeps = Frequency X Time = 1.5 X 400 = Approximately 600 beeps in total.

It boots into Windows normally, and I can still do everything normally (eg: internet) while it is beeping and once it stops.

Johnny|lucidcomposure · 17 Nov 2010 at 16:13

Has a fan failed?
Power to gfx card ok?

Jango · 17 Nov 2010 at 16:19

My graphics card seems to be ok, I can play COD Black Ops on the same settings and FPS as I could before.

EDIT: The beeping has stopped now, I put the settings back to normal and did a 5% 'AI overclock' instead. Now it's at 2.45GHz!

EDIT AGAIN: Now I'm at 2.68GHz (15%)! Just what I wanted.