Problem with a P4SD-LA J17 jumper

I have built a computer using parts i have got on ebay. When i recieved the motherboard, the jumper J17 was on pins 2 and 3 which are to reset the CBIOS settings. Unfortunatly i didnt realise this at the time and built everything, formatted the hard disk and installed windows. I found that everytime i switched the puter on, the system clock was reset. i figured out that the j17 block was in the wrong position. Upon moving it over, i found that there is no signal to the moniter when i boot the computer up nor does the keyboard work. But when i put it back to pins 2 and 3, the puter boots up fine apart from resetting the CBIOS.

Is this a faulty board or is there something i can do?

 

Are you using PS/2 or USB keyboard and mouse? Does the computer boot into Windows when you have the jumper set in the normal position or does it hang completely?

If you have a PS/2 keyboard I would try setting the jumper to normal and see if it will boot into Windows even if the screen stays blank during POST.

 

Yes i am using a ps/2 keyboard and mouse. The puter only boots up if the jumper is on pins 2 and 3. otherwise, it goes blank about 5 seconds after pressing the power on button.

 

Can you narrow down which model motherboard it is (Stingray, Oxford, Cobra) http://www.google.com/#sclient=psy&...5&aql=&oq=&gs_rfai=&pbx=1&fp=5ddd74dd827ab059 and also give the BIOS version from the BIOS screen? Is it an HP model PC?

(I was hoping it might have been a problem with a USB keyboard being recognized but it appears to be something else.)

 

I'm just thinking a few simple things to test would be to swap batteries if you have a spare. Sometimes a bad battery can cause weird problems.

Also try with the jumper in the normal position unplug any HDs and Optical drives (just monitor connected) and see if it POSTS. [Keyboard must be connected also] If it POSTS add the HD back and check again. etc.

 

Hi,

All that jumper does is open the battery circuit when you remove it and put a short circuit on the circuit to discharge the capacitors when you put it back on, usually 2 & 3. Putting it back on 1 & 2 makes everything right again with the CMOS SETUP info reset to defaults. Most MBs made in the last 10-15 yrs will not start with the jumper on 2 & 3. The jumper was to was to keep from running the MB CMOS battery done while the MB was still on the shelf and also to reset the CMOS SETUP. Is it possible that you are reading the numbers on the pins incorrectly. Check the manual for the MB.

Good Luck, Jim