Really Annoying Problem!!! Inconstently post/booting computer.

G

golanThanatos

Geek Trainee
my girlfriends computer died recently, after testing some things i figured it must have been the motherboard that was fried so we took the opportunity to upgrade from am2/ddr2 to an am3/ddr3 board.

Now i'm having an incredibly annoying time getting this new setup to work:

Kandalf LCS Case
Antec 850 True Power Quattro PSU
MSi NF750-G55 mainboard
AMD AthlonII x4 2800
Sector 5 DDR3 4gb
BFG 8800gtx OC2 X2 in SLI
2 hard drives and 1 dvd-rw combo drive and a floppy

i was pretty confident it was the motherboard on the old setup that was the problem so i went ahead and put the new parts into the case and wired everything up and plugged in the case, NOTHING.

powered up lights, fans and pump came on, but no post, nothing on the screen the same problem as before all the new parts. Took out both video cards and tried again, nothing again, tried one more time to be sure, got a post and a boot into windows

Tested both video cards in another computer, both work independently so i put it all back together again, works, i'm relieved and start installing drivers, reset the computer to finish driver installation, once again wont work.

I'm getting incredibly frustrated, i have no idea what could be wrong I've tried everything i've tested every individual component as far as i can think of, works and posts inconsistently, I've done more fiddling on this setup over the past week, I've gotten it to boot 6 times in a row some days and others i cant get it to boot at all, I'm going nuts trying to make this system work!

please for the love of god somebody have the fix for this other than splitting all the parts up into other computers
 
Did you dig through your BIOS settings?

I've had a problem with inconsistent computer behavior (although, not exactly like you describe), and I got it fixed partly by digging through BIOS settings. It was mismanaging my memory/fsb speeds. I forgot precisely how it went, but it would sometimes have the correct speed for my memory bus and sometimes incorrect. I switched it from the "by SPD" setting to manual, and that worked. And then I switched it to "Auto" and that also worked. For some reason the "by SPD" setting for the memory was giving issues. You certainly have a much, much newer MoBo and BIOS so maybe your BIOS doesn't even have those settings. I don't know, my computer is old, and I haven't kept up with all the new tech they have now. But anyway, then I also discovered that my setting for the CPU voltage was mysteriously at some preposterous value, and that's what was causing my CPU to overheat. Ridiculous. I don't remember ever touching that setting. Switched it to what it should be for my processor and the temps came down like 10+ degrees.

So, just suggesting that perhaps you should dig through all your bios settings and make sure all is correct. If you haven't done that already. Good luck.
 
After checking more stuff i've found that the power supply has 4, 14v rails each providing 18 amps and the video cards require 32 each, could this problem be because i have the video cards connected to 2 or 3 of the 12v rails instead of all 4?

next time i get it to post i'll go into the bios and check
 
Well that seems reasonable. Lol, if it says it needs 32 amps and you're only giving 18, it's bound to have some kind of problems. Is anything preventing you from connecting all 4 of them to the cards?
 
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