No POST, no boot

Changed the Bios on an EP 8KHAL+ EPOX motherboard.  Rebooted fine, etc.  I changed a couple of things in the cmos settings after, and now no post sounds,  no bios page, nothing!  What did I do?  It booted up fine about 4 times after the bios change.
queiraAsked:
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stockhesConnect With a Mentor Commented:
Try to clear CMOS with that jumper.

Cmos is the bios store

Power off (cable off case)

push start button to empty current from electrolytic capacitors

now move jumper for 30 secs

do not forget to put it back to 1-2


Another try is to push and hold the insert key while power on should also revert to failsafe bios settings
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queiraAuthor Commented:
Cdrom start and lights are on, the hard drive light  constant
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queiraAuthor Commented:
There is a small silver (tiny) transistor thing that says Jbat 1  cmos clear , 1-2 normal, 2-3 clear cmos
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ridCommented:
You *changed* the BIOS? How? Swapped chips? Re-flashed it? What did you use instead of the original BIOS?
/RID
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queiraAuthor Commented:
Thanks!  I changed this setting in the Bios that said cpu clock 100 to cpu clock 125, and had to clear the cmos to get POST back.
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stockhesCommented:
Hi Quera

Trying to overclock ?

I do not know which cpu you have, but assuming if normal fsb = 100 something around 1 gig processor that means Multiplier at 10 X fsb(front side bus)

Now if you raise that FSB to 125 your CPU will run 10 X 125 = 1250 MHZ thats an increase of 25% that is a lot

You also increase AGP speed & PCI speed by 25 %.

You also raise the bus speed to your ram as well.



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