Abit IP35 Pro issue (C1->C3->25 loop)

Teaf

Teaf

Teaf

Soldato
Joined
17 Dec 2006
Posts
8,245
Just installed a new CPU today in my machine, and for some reason the machine won't display anything on screen but it really does seem like it's booting everything in. The graphics card fan is going to 8v from 12v as I have that set in the BIOS, and I can hear the hard drive working. The board also has a red and green light next to the 24 pin power, both are lit (which is correct - red for power, green for "on").

Tried 2 different graphics cards, 2 different types of DDR2 in various combinations in the board. I've also tried resetting the CMOS on a few occassions, it doesn't help. The CPU replace was from a Q6600 to a E8400. The board was flashed to v17 of the BIOS prior to installing the E8400.

When I turn it on, it does one of the following:

  • Gets to 8.3 then turns off (very rare, once in 50 power ups)
  • Stops around F.1 (very rare, twice in 50 power ups)
  • Loops around 3 codes which are: C1 -> C3 -> 25 (near all the time)

I've read what the codes mean and it appears to be this:

25 Early PCI Initialization:-Enumerate PCI bus number.-Assign memory & I/O resource-Search for a valid VGA device & VGA BIOS, and put it into C000:0 00->C1->C3-> Stop at 25 BGA error Change graphic cards or unplug card and plug card back in again

Which sounds like my problem, but I've two different graphics cards and both get stuck at this C1 > C3 -> 25 loop.

[EDIT]: Sorry forgot to mention... I get the C1 -> C3 -> 25 error loop regardless of whether the graphics card is in or not, also it happens on both PCI-E lanes.

Anyone have any tips?
 
Last edited:
Sold my Q6600 unfortunately, but I've just tested the machine with my fathers E2180 from his machine and it boots up straight away.
 
I'm tempted to say it's looking likely it's your cpu at fault but you need to get that bios updated on your fathers machine to be sure.
 
Aye, if that one won't boot it, it's going to be the CPU - nothing else it can possibly be.

Thanks for the assistance Greebo.
 
Cob said:
Have you cleared the CMOS?
Click to expand...
flibby said:
I've also tried resetting the CMOS on a few occassions, it doesn't help.
Click to expand...

Turns out it was the BIOS.

I was on BIOS 17 and it would not boot it at all, tried BIOS 16 and still no luck, works fine on BIOS 14 though. Bloody thing, but it works now after 7 hours of fiddling, thanks for the help :)

*goes and lies down*
 
Aye, thankfully it seems to work fine however which is the main thing. The only thing I have to put up with this BIOS is my CPU reporting as 256 oC which thankfully isn't true :o
 
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