I recently installed a new motherboard and noticed that the HDD activity light is only blcking once per second, eventhough its stupposed to be blinking continuisly specualy when the computer is booting up. this makes me wonder if there something with the motherboard or with the jumper settings on the hard DRIVES. I recently updated the bios to the "P10" version.

Any ideas?

ThanksLast time I saw a similar issue, it was a motherboard with a CPU installed that was mismatched to what the motherboard could support. But this was many years ago on a socket 370 motherboard in which a 1Ghz Pentium III was installed on a motherboard that only supported up to 733 Mhz. In addition to this 1 second blink that was from the "Power LED and NOT the Hard Drive LED" the system was running the 1Ghz CPU underclocked. In the BIOS I was able to see that it was running my CPU at 733 Mhz instead of 1Ghz. Other than that Windows 2000 ran without problems and i had no error messages at system post to display any issues. I ended up having to get a motherboard that was a 100Mhz FSB instead of 66Mhz FSB to use my 1Ghz CPU at 1Ghz.

Look at your BIOS settings and make sure all looks correct. Quote from: DaveLembke on December 15, 2010, 10:46:08 PM

Last time I saw a similar issue, it was a motherboard with a CPU installed that was mismatched to what the motherboard could support. But this was many years ago on a socket 370 motherboard in which a 1Ghz Pentium III was installed on a motherboard that only supported up to 733 Mhz. In addition to this 1 second blink that was from the "Power LED and NOT the Hard Drive LED" the system was running the 1Ghz CPU underclocked. In the BIOS I was able to see that it was running my CPU at 733 Mhz instead of 1Ghz. Other than that Windows 2000 ran without problems and i had no error messages at system post to display any issues. I ended up having to get a motherboard that was a 100Mhz FSB instead of 66Mhz FSB to use my 1Ghz CPU at 1Ghz.

Look at your BIOS settings and make sure all looks correct.