Asus A7S333 Post Problem. HELP!

DreamerSpawn

Senior member
Jan 4, 2005
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I have the Asus MB: A7S333 and I am trying to put in the AMD Athlon XP 1700+ CPU (1.47 GHz). I use 1 Gig (2x512MB) Kinsington PC2100 ram. The CPU has a 266 FSB.

I need to know what jumper pins/switches or BIOS settings I need to alter to make this work properly? I have the latest BIOS revision (v1006).

The MAIN problem is when I turn the computer on (with the 1.47 GHz setting), it powers up just long enough to shut right back down (power wise). What it's doing is when I press the power button, it's as if the power gets almost immediately cut. I've changed power supplies and even tested the processor on other friends boards that support it (on working systems, to ensure the processor is good). This is the only one that I've put it in that is an A7S333. If I am determined enough, I can keep trying (sometimes takes over 40 tries) and it'll come on, and hop me right into the BIOS and tell me the CPU settings aren't correct and that it's running in some kind of BIOS Safe Mode so that I can adjust it to the proper settings.

I've tried the three varieties I have on CPU External Frequency Selection: OFF, OFF, ON, ON then ON, ON, ON, OFF then OFF, ON, ON, OFF then OFF, ON, OFF, OFF then OFF, OFF, OFF, OFF....but I did those selections when the computer was already locked in that SHUT OFF mode. In other words, when I tried those settings, I didn't give the computer a chance to load back up (multiple tries each time...would have taken BIG time). I need to be sure what settings I need to use for this processor.

I have been told that I may have to mess with the DSW (CPU External Frequency Selection). It is currently set to all switches OFF, which is 100/100.

Please help me guyz...my Gigabyte MB just took a major digger on me and this MB is my last hope. Please respond soon.
 

imported_Phil

Diamond Member
Feb 10, 2001
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Have you tried clearing the volatile BIOS contents (more commonly known, mistakenly, as the CMOS contents)?
Look for the CCMOS (or ClearCMOS) jumper on the board. Turn the machine off, and unplug. Move the jumper to the second position on the CCMOS pins, wait a few seconds, move it back to the original position, and then reconnect and power-on.
Have you downloaded the manual from Asus's website to see what the DIP switches positions correspond to? I did try, but their servers are having problems. I didn't notice an A7S though, only an A7V333.
 

DreamerSpawn

Senior member
Jan 4, 2005
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As a matter of fact, I did try that with no avail. As for the switches, I'm not sure which to set mine at...but I've tried all of the five variations.

Here is the link to the manual.

Click Here

Thanks for responding tho Dopefiend....that was VERY quick. Before I found out about this forum, I made several posts on different tech sites, and no one has even made an attempt. I wuz beginning to think I was on my own. :) Thanks again.

Further Info: I have to keep my system up and running so that I can use it, cause once I get it going, if I power down, I have to play the power up game. Last time, it took 3 hours doing so....and if it weren't for my power console under my monitor (which allows me to cut power to my entire system), I would have to UNPLUG the cord from the back of the computer in order to be able to try again, once it dies when trying to power up. I would have to do that EVERY time it dies in order to even register power again..if it weren't for my power console. I thought it was a defective motherboard, but when I DO get it up and running, it STAYS running. I've had the system up for like 3 days now, without a hitch (after I played the 3 hour on off on off on off on off game). I DREAD turning it off.
 

Uncle Bob

Senior member
Oct 24, 2004
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So we know the CPU is good 'cause it posts on another board, can we assume the A7S is good 'cause the bios has been updated? was this updated with this cpu once you had managed to get it going?

Now, ASUS list the XP1700 as compatible with all pcb rev and all bios revisions from 1002 and later **BUT** the XP1700 you have is the Thoroughbred B version and I have a suspicion that this is where your problems lie.

For example; the Sempron is supposedly based on the Thoroughbred-B core and compatible with socket-A boards... However, ASUS don't list any support for Sempron chips on the A7S333....

Anyway, You could try adjusting the CPU voltage on the motherboard as the Thoroughbred-A chip is spec'd at 1.5V but the Thoroughbred-B requires 1.6V, this may be enough to stop it posting properly..

let us know how you get on