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Motherboards for x-mas pcs

Trish's Escape from Hardware Hell Help Board » Hardware » Motherboard / CPU Related » Motherboards for x-mas pcs « Previous Next »

Author Message
Chris Jackson
Posted on Monday, December 17, 2001 - 6:29 pm:   

I recently purchased two gateway m-boards to build pcs for x-mas. They are the Jabil pII/pIII
100 fsb m-boards. I slapped two PII 300 Mhz processors into them, stuck them in two new cases with 300W power supplies and matching 66Mhz memory, the boards can operate @ 100 0r 66Mhz.
PROBLEM: When I throw the switch on the power supply, the system powers for 1/2 second then cuts off. This is with jumper in setup or normal
operation. With jumper removed (recovery) it will stay powered on. Why will these systems not go through POST? Please help Santa Claus!!
V (Vera)
Posted on Tuesday, December 18, 2001 - 7:20 am:   

You need 100mhz memory to use the 100 fsb setting. Recheck your jumper settings.

Posted on Tuesday, December 18, 2001 - 1:57 pm:   

The Pentium 2 300 MHZ runs at 66 MHZ FSB but as Vera pointed out the motherboard may require PC100 memory.
V (Vera)
Posted on Tuesday, December 18, 2001 - 4:55 pm:   

If the board has jumpers to set the cpu fsb and the memory runs at 66mhz then the frontside bus is only going to run at 66mhz even if the cpu supports 100mhz fsb. The cpu fsb jumpers need to be set accordingly. If the cpu supports 100mhz fsb then 100 mhz memory needs to be used in order to utilize the 100mhz fsb.
Posted on Tuesday, December 18, 2001 - 8:45 pm: Herein must be the problem as this board doesn't appear to support any FSB other than 100 MHZ no 66 MHZ support is listed so the lowest P2 would be a 350 MHZ running at 3.5*100 FSB. Gateway does strange things to Bios setup perhaps you can move the jumper to allow CPU setup you may get it to work overclocked at 400 MHZ.
Posted on Tuesday, December 18, 2001 - 9:00 pm: This sight from Gateway goes into a bit more detail about CPU support and 66/100 FSB and will support P2 300 at 4*66FSB so check the ram as it may not be sufficient to run on this board.
Posted on Monday, December 24, 2001 - 11:41 am:   

Posted on Monday, December 24, 2001 - 12:05 pm:   

Thanks for the pointers, I was able to find the
answer on intels website. My oversight, the front
panel header was a two pin power on, the case had a three pin center removed connector. A simple modification to the connector, and it works fine.
Now that I can get to the bios setup, I see that with the latest revision, they will support PIII
533Mhz. Happy Holidays
V (Vera)
Posted on Monday, December 24, 2001 - 12:06 pm:   


What was the solution?

Posted on Saturday, December 29, 2001 - 9:48 am:   

The solution was that the three pin front panel connector to power switch needed modified to a two pin configuration.

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