Can you all give me some advice on my problem?

[ICantAffordIt]

I'm having a problem with my overclock. It is a 4300 retail chip in a DS3 3.3 board. The RAM is supertalent (which people have had good results with apparently). My video card is an x1800xl 512mb that has been bios flashed to an x1800xt. (I don't know if you guys remember that... probably about 6 months ago).
When I try to overclock the chip I get no video... my monitor stays in power save mode. The fan on the video card is on high the whole time. I can tell the computer boots into windows, I get sound and I can shut down the computer. After a few power cycles the bios will kick back into 9x200 and I'll have video again.
I've tried a few different speeds (CPU). I've tried the "auto" settings for voltage and pciexpress frequency. I've tried adjusting the voltage some manually for the video. I haven't tried the millions of combinations in the bios yet.
I was hoping someone else may have run across this, or has an idea of where to start. I've overclocked in the past (300a celeron, P3 1.8) but I've never dealt with PCI express before or all the options in this bios.

As long as it takes me to try each setting (because of the multiple power cycles to get video back) I'm tempted to hook up a switch to the bios reset jumper. At least that way I can reset it and try something else quickly. It takes about 3 to 5 minutes every time I try a setting.

Sorry for another 4300 thread, but I've checked the first 3 or so pages of threads and didn't find anything on this yet.

Any help is greatly appreciated, thanks!

 

[nyker96]

I did hear people say you for S3/DS3 you want to lock PCI-e to 100 or 105 manually when OC. Set that to manual, see if it would solve your problem.

 

[Zardnok]

What sort of PSU are you using? Could it be a problem where your Video Card is not getting enough power because your CPU is sucking it all up?

 

[ICantAffordIt]

I've tried to lock the pci to 100, haven't tried anything but auto and 100 on that setting. I'll give 105 a shot. My psu is an antec smartpower2.0 450watt. I don't think it's power supply related, but maybe... I wouldn't think the cpu would be sucking up that much more power clocked at 2.4 as compared to 1.8. I haven't had time yet to try increasing the cpu speed one mhz at a time to see exactly where the video stops working. I got the coolermaster hyper tx chip cooler and I tried 9x333 and 9*300 and 9*270 with multiple settings per clock speed. I really expected it to boot at 3 ghz without a problem. I spent about an hour just trying those speeds, so after that I decided I needed your guys' help with it.