Abit AB9 Pro boot issue (code F. & .2)

[zakhtar]

Hello all,

I'm currently having issues similar to the one described in this thread. (Sorry I can't link, don't have enough posts yet).
forums.hexus.net/abit-care-hexus/152935-ab9-boot-issue-f.html

In addition to the issues described above, I've got a few extra problems which I feel are related.

First problem, the PC switches itself back on after it successfully shuts down. It switches itself on approx 15-30 secs after powering off. During the period that the PC is off, the LCD inside the motherboard continually flashes "F.", then ".2" and continues repeating this until eventually the LCD goes to "0.0" and the PC powers itself back on. Everything that could potentially wake the system has been disabled (i.e. WoL, "USB power on" is all disabled both in the BIOS and windows/ubuntu). The only solution to this is to switch the PSU off, but that then leads to the problem described in the link above where the PC won't come on when I press the power button and instead I have to wait a few minutes before trying.

Another problem that I am having is that my overclocking settings in the BIOS are not being saved. The other areas in the BIOS will save their settings however. For example, I can successfully change options such as the hard disk boot priority, disable controllers etc, but it won't remember any OC changes. I'm not doing anything crazy in there, just simple adjustments that were working for over 2 years. I have RAM that should be set to 2.0V and another kit that requires 2.1V but the BIOS always defaults back to 1.8V. This is so low that I can't run all 4 sticks without a BSOD and have to revert to only 2 sticks. I also had the CPU over clocked, from 2.4GHz (266*9) to 3.1GHz(345*9) but this has also reverted back to 2.4GHz.

All these problems started about a month ago and like I said, I feel they're related. I've tried updating the bios and even downgrading the bios but that hasn't helped. I've tried clearing the CMOS and removing the battery but that hasn't helped either. I'm not really sure what to look at. The post linked above mentions that it could be the PSU but I don't have access to another PSU and I haven't had a chance to take apart my system and just test the PC with the bare minimum. I'll let you know how that goes when I get the chance.

I'm not sure what to do so I'd really appreciate your help. I'm hoping there's a very easy solution to this.

Thanks

System Specs (let me know if you need more detail )
Intel Core 2 Duo E6600 2.4GHz
Geil 2x2GB & 2x1GB 800MHz DDR2
BFG 8800GTS 640MB
Tagan 600W PSU

[BUFF]

you could try a new CMOS battery but it could well be that your PSU is not entirely healthy assuming that you truly have disabled every wake on possibility.

[zakhtar]

Sorry, I should have mentioned that I've tried replacing the battery. It made no difference unfortunately.

How could I go about "testing" the PSU? I was thinking of taking the system apart and rebuilding it just incase there was some short circuit or loose cable but if the PSU is faulty then that wouldn't really help. I'm guessing the best way would be to test with someone elses PSU.

[zakhtar]

OK, I realise the thread is a little old now, but I just thought I'd let anyone else having similar issues know that it was the PSU. I replaced that and everything's ok now.