Problems with A7V Mobo!

[orenm]

Hi All

I am having problems with my A7V.
I flashed Bios 1006 a while ago and it worked fine, however I was not aware my RAM are not CAS2 and accidently I setted it to CAS 2 and also changed the FSB to 105.

Ever since my mobo wont do POST. I can hear the hard drives spinning, the CD is being accessed as well, all the fans and power are up, but the mobo wont do the normal one beep. Also the monitor wont turn on and will remain on the blinking orange led state.

I do know the monitor is okay as I've checked it with my Celeron machine as well.

Anyhow, I was about to clear my CMOS but then I noticed my board dont have a Clear CMOS jumpers (ASUS A7V rev1.04), I removed the batt, and left it for an hour or so .. still nada!

I removed the heatsink and fan to check the CPU and it looks alright! I disassembled everything and assembled it back, but still no luck. nada!

I tried switching from Jumperfree mode to Jumper mode and vice versa no luck.

Any ideas? is it possible that by changing the CAS to 2 and FSB to 105 something has been damaged???

I'd appriciate your creative suggestions.

This is my hardware for your reference:

Asus A7v (Revision 1.04) Bios 1006
Duron 800Mhz
256MB PC-133 RAM
Herclues GeForce2 GTS Pro 64
SB Live Platinum + LiveDrive II
Quantum EX 10.1
WD 15 GM UDMA66
1.44Drive
Team X32 CD
RealTek 8029(AS) NIC.

Thats about it,

Please let me know,

Regards,

Oren M

 

[DanishGuy]

Hey...

How about borrowing a stick of CAS2 RAM from a friend or something, stick it in and see what happens?

 

[orenm]

I dont have CAS2 within reach .. thats my prob.

But, there must be a way to clear the CMOS, right?!

ORen.

 

[DanishGuy]

Yeah, ever tried reading the manual of your mobo?

I can't remember, and I'm not at home right now.

Also my mobo is rev. 1.02, so I'm not sure whether there's a difference.

 

[Priit]

The clear CMOS jumper is missing, but it's pins are still there. You can shorten those with piece of wire or sth. Hope that helps.

 

[lotust]

take the darn battery out for 5 minnutes. turn off the PS as well..


I have the A7v as well. I think it kinda sucks

 

[kimber]

not for sure on the a7v but i just installed the a7v133 for a friend and instead of jumpers it just has acouple of small metal spots(for lack of better words) that you ground out with a screw driver.as was already said the best way is to read your manaul.good luck

 

[mechBgon]

With the A7V, if the computer tries to POST and fails, it will attempt to restart at default BIOS settings. So for instance, let's say I go into the BIOS and set the FSB too high, and the system won't POST. The next time it boots, it will revert to the standard 100MHz FSB and standard CPU voltage and standard everything.

Now there is the catch: standard voltage. If I set my Duron 650 to a multiplier of 8.5, it needs 1.85 volts to POST and boot up. If something goes wrong, it goes into "safe mode" and tries to start at standard voltage, but the default voltage is not sufficient for the multiplier I set on the dipswitches... it will not POST at default voltage and a multiplier of 8.5.

Simple solution: I have to flip all the dipswitches back to the "off" position, at which point it is a 650 instead of an 850, and it can boot at 650 with default voltage.

Once it's booted I can go back into the BIOS and set the voltage, then restart it at the higher multiplier again. Hope that is all it is, good luck.

BTW, read the manual, there are two metal contacts on the surface of the mobo for clearing the CMOS... but if it's the situation I described above, clearing the CMOS is not going to help if the dipswitches are set for too high a multiplier.

 

[lotust]

<<Simple solution: I have to flip all the dipswitches back to the &quot;off&quot; position, at which point it is a 650 instead of an 850, and it can boot at 650 with default voltage. >>

ok how bought this one. Get you PC stable at whatever speed you can. then use the JUMPERS. that way after a reboot you mobo will use the 1.75 or what ever.

I did this last night after I started to get PIST. It took some time to set the jumpers. But its allot easier then going into the BIOS 10X in a day

LMK if this works for you all.

 

[Hardnut2K]

Try setting the JEN to on ie: bridge 2-3.
Worked for me when i tried to push my Duron 600 past 950...

 

[lotust]

yeah the JEN Jmper and the four Dips have to be set to OFF. the dips are right next to the multiplyer Dips