Altho I am new to this forum, I am very impressed with the quality of the helpful responses from you folks.

I am building my first PC using the following components:
Enlight 7237 Case w/300W P/S
Asus A7V133
Athlon IGHz w/Coolmaster 60mm X 80mm HSF
265MB Micron Technology PC133 SDRAM
ATI All In Wonder 128 Pro (AGP)
IBM 40GB 7200 ATA 100

During assembly, I was careful to eliminate ESD problems by grounding the case and using a wrist strap.

After I assembled the components, the system refused to boot. The onboard LED was lighted when I turned on the AC power and stayed lighted when I pressed and released the front panel switch. When I released the switch, the P/S, mobo, CPU and chassis fans all came on for just an instant and then went off. No beep codes. The monitor didn't wake up.

I tried reseating the CPU, memory, video card, and all cables and shorting the BIOS. I checked all of the DIP switches and jumpers (set for jumperless mode). I checked all of the front panel switch/LED connectors.

I tried it again after removing the mobo from the case and mounting panel and setting it on a nonconductive surface w/o anything connected except the CPU w/HSF, chassis fan, and speaker (no memory or video board), looking for a beep code. No beeps, no change.

I tested the P/S w/Power On and Power Good pins jumpered and all voltages appeared to be okay. The P/S fan and chassis fan worked okay. I removed the jumper and the +5V Standby voltage was okay.

I checked the performance of all of the fans by separately applying 12V and they were all okay.

I also tried a 250W Enlight P/S from my old computer and the results were the same.

The only glitch that I have been able to detect occurred when I first powered up the system. I noticed that the onboard chipset fan did not move, altho the CPU fan moved briefly. After close inspection, I discovered that a plastic mounting stud like the kind attaching the HSF to the chipset had apparently fallen into the fan and lodged itself under the fan blades, jamming the fan. I don't know if this caused any damage or not when I powered it up initally. However, this makes me think that the mobo never saw a final powered up inspection test after the chipset fan was installed! The jammed fan would have showed up at that point.

It appears to me that the mobo is not furnishing the Power Good signal to the P/S.

So, kind folks, I'm fresh out of ideas. Any suggestions or help you can offer will be most welcome. I have ordered a replacement mobo, CPU, and SDRAM chip so I can do some swapping to try to isolate the problem. It is sure looking more and more like a bad mobo to me. But then if I had all of the answers I wouldn't have to bother you folks, would I? http://www.PCGuide.com/ubb/smile.gif

I have learned more than I wanted to know about how a PC works during this adventure! Thanks for being there to help.

Paul Stoops

Welcome to the group Paul;
Have you checked the ribbon cables to your harddrive and floppy? Most of the time it is the simple things like that which would cause the problem. However, if momory or CPU is not seated correctly you would get errors like that.

Hello Paul,

I too am running an A7V133. You didn't mention regarding your Sound Card, or is it on board? I also am running an ATI All in Wonder Pro 128 same Enlight case...enough that we are pretty similar. I have been the rounds with this MB. A couple of things: The chipset fan I think reports to the ASUS Probe program and would shut you down if it was not turning within specs. The chipset fans on this particular MB are trash anyway. There were numerous posts on the Asus NetQ Form with bad fans. Mine was vibrating noisily and I asked for a replacement from ASUS....they sent me the same thing back! I replaced with a Thermaltake and it is running smooth and quiet.

Once you get past the initial problem, this MB has a problem detecting the HDD in the ATA slot if it is not formatted. To bypass plug into the Primary Master IDE and perform the procedure there...then shut down and replug into the ATA should work like a charm.

Was curious about the sound card because this board is extremely fussy with the PCI slots. Put my SB Live Platinum 5.1 in slot 1 and I could not make it through POST. With your ATI in the AGP you need to leave PCI slot 1 open as it shares the slot with the AGP...we're not just talking IRQ sharing, but slot sharing. Check out Page 29 in the Manual on the bottom of the page and you will see the slot sharing diagram. If you add anything be sure to check out what is slot sharing with what! Make sure that you get the latest drivers for the ATI and update the BIOS to v.1005A. The ATI were are running is fantastic, however, it's technology is already 2 years old and it was designed for Intel technology. Our VIA chipsets throw it a curve...so be sure to get the latest VIA 4in1 Drivers.

I'll watch for you to post back...will be happy to help out an ASUS buddy!

May all your dealings in life be win/win!

Whyzman

Paul.
If you want to do a power up test again.
Install the Memory, speaker, cpu, video card keyboard and floppy drive cable+ drive.

Set it on that non conductive material and plug in the power supply.
*** Make Sure The Heat Sink is mounted and the Fan is connected to power ***
****Before you turn on the power****

This should give you a clean power test and allow it to post.
(Using PS connection to power on)on the front of the M/B
Also allow you to access the bios.

If it still fails to post then you may have a DOA M/B
If it does work. Then you need to recheck the mounting in the case for shorts,
Check all of the stand offs and connections. Anywhere that the board may be grounding out.

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To ERR is HUMAN
To REALLY screw things UP, YOU NEED a COMPUTER !

Hi Paul... Have this feeling that the fan header on the Mboard was damaged because of the chipset fan being locked-up as it was. Give this a shot, unplug all the fans from the Mboard. Find a different source of power for the CPU fan, flip the power switch on the back of the case a few times with the unit plugged in, and then see if things will power up in the normal fashion.
Also, give it a shot by getting out of the jumperless mode and setting all your dip switches accordingly.
By all means re-seat everything. Asus is extremely picky about RAM.
Do you have a 128Mb stick you can go with?
Because of what happened whith the chipset fan a person should think seriously about RMA. Luck

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......Indecision may or may not be my problem......
...... Kickin' A Rock....

Greetings to all,

Thanks to all for your suggestions and support. I am happy to report that this adventure finally turned out to be a complete success!!

I ordered a replacement mobo, CPU, and memory chip, not knowing which of the original ones was the culprit. As suggested, I installed the original T'bird 1GHz CPU and 256Mb PC133 SDRAM and old PCI video card, with monitor connected, into the replacement AV7133 on a nonconductive surface with the Enlight 300W P/S removed from the case. This time, I made sure that the chipset fan was not jammed. With much trepidation and a prayer or two, I pushed the start switch. Much to my delight, all of the fans whirred to life and the system went into POST!!

When I was shopping for replacement parts, I found the mobo, CPU, and SDRAM for a better price at Newegg.com. As a result, I ended up buying a T'bird 1.4GHz CPU which is overclockable, altho I don't plan to do so at this time.

So, I replaced the 1GHz T'Bird with the 1.4GHz T'Bird, and added the second 256Mb PC133 SDRAM. I also replaced the PCI video board with an ATI All-In-Wonder 128 Pro 4X AGP board. I also mounted the HSF with Arctic Silver II. The system again booted successfully, allowing me to set up the motherboard in the BIOS. I really like the BIOS setup, instead of messing with all of the switches and jumpers.

After struggling thru the installation of Win 98SE, the system is finally up and humming, for which I am very thankful.

In the final analysis, apparently the original A7V133 was damaged when I first powered it up with the jammed chipset fan. I will return it for a refund.

So, my final system came out to be as follows:

Enlight 7237 case w/300W P/S & additional case fan
ASUS A7V133 mobo
Athlon T'Bird 1.4GHz CPU
Coolermaster EP5-6I11-A1, 4800 RPM HSF w/Arctic Silver II thermal compound
256Mb Micron Tech + 256Mb Samsung PC133 SDRAM
IBM 40Gb 7200 RPM ATA 100 HDD
ATI All-In-Wonder 128 Pro 4X AGP video card w/TV out
Creative Soundblaster Live! 5.1
3Com 2977 internal V90 PCI modem

After using my original 200MHz system for the last 4 years, this system really appears to hum!

No apparent incompatibility between the Micron Tech and Samsung SDRAM.

The mobo/CPU temps seem to stay in the range of 28-30ºC/49-51ºC, as reported in the BIOS. As reported by others, there is a noticable discrepancy between the temperatures reported in the BIOS and those reported by the ASUS Probe software. Consequently, I dumped the ASUS Probe and downloaded the freeware program, MB Probe, which follows the BIOS numbers accurately. I also like the small temperature window in the bottom Task Bar which alternates between the mobo and CPU temps and gives real time readings.

Again, thanks to all who took the time to respond to my cries for help and so freely offered their experience and expertise. I have learned a lot from the many quality responses posted on this forum. http://www.PCGuide.com/ubb/smile.gif

http://www.PCGuide.com/ubb/wink.gif Paul... Thank You for posting back. And cheers on your mision success.

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......Indecision may or may not be my problem......
...... Kickin' A Rock....

Hey anyone ot a manual for a av7133 that can tell me the locations of two sb port wires totaling 8 wires on the 9 pins on the board no manual

Welcome tohttp://www.pcguide.com/ubb/pcgubb.gif Forums!

I provided a link in the return PM for the manual on the ASUS website...

I'm not sure exactly what you are asking for...

USB pin alignment: board oriented with CPU socket as North end

Pins 1-5 on North
Pins 6-10 on South (blank slot pin #10)

1=USB power
2=USBP2-
3=USBP2+
4=GND
5=NC

6=USB power
7=USBP3-
8=USBP3+
9=GND
10=blank