Asus CUSL2 voltage adjustment woes

[Nagorak]

I recently picked up a CUSL2 motherboard from a friend which was kind of busted up. One of the socket lugs had broken off, making heatsink attachment difficult. Fortunately, I managed to get around this by using a Taisol CGK heatsink.

Now, I'm running it with a 667 MHz Celeron processor. I'm pretty sure that with the proper voltage this chip can do a gig stable. It posts up to some 900+ MHz at default voltage (granted this is only posting, not actually booting, but it is a DEFAULT voltage, which is promising).

This leads me to my problem: it appears that the voltage adjustment feature of the motherboard is not working. I can adjust the voltage up from 1.65 to 1.95 volts, but when the system boots up and I check the hardware monitor in the BIOS the voltage is still really set to 1.65 volts. No matter what voltage I set it to this happens. Furthermore, when I set the voltage higher than 1.70, the board will refuse to boot beyond post, even at stock speed.

The really strange thing is this is just a problem with ADJUSTING the voltage. I put an old Celeron 366 in there, with a stock voltage of 2.0v and it ran fine. So, obviously this is not a powersupply issue. The board CAN give that much juice, it's just not doing it. Similarly, when I tried to bump this Celeron up from default voltage it would not change and would not boot at all when voltage was set beyond 2.1v.

I tried flashing to the latest BIOS with no success. I guess I'm thinking the board might be defective or have been broken. The person who previously owned the board, well, frankly didn't know what the f#$% he was doing, and he managed to mess the board up pretty bad (ripping the socket lug off), so he might be responsible for this problem too.

Either way, I'd rather not have to RMA this board, as I need this system up and running (and don't want to have to buy a temporary replacement). I know there is a way to wire the voltage pins together on the Celeron to allow you to select a higher default voltage, could anyone link me to a how-to for this? Also if you have any ideas how to fix my problem, by all means let me know.

Thanks a lot!

 

[outhouse]

No problem hardocp has the info you need in the article's section remember to pay attention to your default CV when trying this if you go to high it wont work or maybe will fry something I tried twice and no go so i gave up then Batboy helped and the third time is a charm my default was 1.7 so i tried for 2.0 and 2.05 because in my bios i could already go to 1.9 but that was my mistake i tried for 1.9 and now in bios i have aptions too 2.10 I dont know if this will help your problem but good luck

 

[Door Knob]

I have this board and it does have problems changing voltage if you don't actually turn the macine off. If you just keep reseting after changeing the voltage in bois it might not actually change it. Make sure you shut it down after you change it, then check it.

 

[LutaWicasa]

For those with CUSL2c some very useful info can be had at CUSL2c.com

 

[Nagorak]

Door Knob (May 19, 2001 01:00 p.m.):
I have this board and it does have problems changing voltage if you don't actually turn the macine off. If you just keep reseting after changeing the voltage in bois it might not actually change it. Make sure you shut it down after you change it, then check it.

Thanks, I'll give it a shot. I had a CUSL2 before and I never remember having this problem, but maybe I was just lucky. I'll see if this works.

 

[Nagorak]

No luck there :-(

 

[Slake]

Here is a link to a how to do the wire trick Nagorak http://www.cotty.btinternet.co.uk/vidpinfrm.htm .

My CPU is Cel 600 cC0
I haven't done the wire trick. Like LutaWicasa said the guys at http://www.cusl2c.com know this board inside out. I don't spend a lot of time there cause it just ain't the same.
My CUSL2-C rev. 1.04 latest Bios offers Voltages from 1.7 to 2.0 only. I think your selection is offered based on what CPU is installed and auto detected (not a fact just my theory). I can't imagine why your voltage changes will not survive a boot-up. To change my voltage I first have to cold boot into bios, set FSB to 100Mhz save and boot to 900Mhz then restart (warm boot) into bios and set FSB where I want it along with what VCore I hope will work. So far I can't wean this chip off of 2.0 Volts. I can boot into windows at 108FSB @ 1.85 Volts but is not stable Folding or gaming and I get random BSODs and errors. Perfectly stable at 972Mhz @ 2.0V .
31C idle 44C full load. Stuck there for now.
Good luck!