K7S5A won't post with Tbred 2100+

[fraim]

Powers up ...silence...shutsdown. Not sure what rev the board is but does have the XP sticker. The Athlon CPU is new and this is the only mobo I have available to test with. Ram is generic PC2100 266 DDR. Sorry for the newbie question but I only do this every couple of years.

What to try first?

try pc100 ramchip?
find an older cpu to test mobo?
buy newer mobo?

[Chuckiechan]

Welcome to Techimo!

Are you getting a post screen? And can you get into bios setup? (Press Del while posting)

I would replace the battery first. It is a CR 2032. Then clear the CMOS - there is a jumper near the battery with three pins. Move it to the other two for a few seconds.

Next try different ram, but only one stick at a time in slot 1.

[woodbutcher]

fraim
Is this a brand new build or are you updating the CPU?

Look at the bottom edge of the board for the version sticker. Usually it's just a #, nothing else.

WB

[fraim]

no beeps, no video, no bios, no post. gotta be the ram, cpu, or mobo, right? I have heard that it takes a few tries to get the mobo to recognize the cpu but how many times? the cpu and ps fans run maybe 4-5 seconds then shutdown. Nothing smoking...yet. I've cleared the CMOS several times to no avail. The ram is good but not necessarily right for this mobo/chip.

thanks for all replies
mt

[Omardeth]

that board is known to only like good ram and good psu's so thats where i would look first . if you can change out the ram to a different type try that if you have it . then the power supply .

[Chuckiechan]

I think you may have a short.

Try taking the MB out of the case and set it on a towel with just the video card, monitor, keyboard, mouse, and one stick of ram. Power it up by shorting pins 2 & 4 (Pg 9 of the manuel). See if you get farther.

Edit: Take a look at the pins where you seat the power plug in the board. Mine bend easily and maybe you fubar'd one.

[Xtreeme]

Dont chase after a batt. yet. Even IF the batt. dead it will post. Safety settings are default and that is what it'd be running at. As for recognising cpu. Ive had a Duron 1gig A 1600+ and a 2200+ now in our k7s5a. Picked everyone of them up first try. I would check to see if the CMOS reset jumper is set to NORMAL. Not reset. Happens often. I did go with good mem though. samsung fan here.

[thronka]

ECS is known for this. I had 3boards do the same thing

[fraim]

Tried another stick of ram and voila! she booted right up BUT, now I'm seeing "unknownAMD processor" running at 1600mhz. I'm guessing this means I need to flash the bios. Any recommendations on which ver bios?

Thanks for all your help.
mt

[Xtreeme]

No bios flash needed. All the k7s5a board rev. and all bios versions supported up to 2200+. What ya need to do is make sure multi is set right and the fsb is at 133mhz. Not 100mhz (default)