No video on boot

I have an Intel D875BPZ with a P4 processor. I have 1 gig of RAM, a 480 W PSU, and 256 MB ATI Radeon 9600, and watercooling, I think that's all the specs that's important. I was having trouble with my watercooling kit, so I have decided, to replace the pump.
After the pump is replaced, the lines are bled (using a second PSU). I check all connections, and take the dive. I set my BIOS jumper to BIOS configure (for I can watch the temps in BIOS), plug in a monitor, keyboard, and lastly, the power. I turn it on. It works. My system idles around 154 (F), which is quite high, so I shall replace more things at a later time, but that's not important right now.
After a few minutes, the screen starts acting up, the temps and voltages would freeze and black pixels would go where they shouldn't. It would correct itself, until one time it didn't. After letting it sit like that for a while, I killed it.
Turning it back on, I got the weirdest beeep code, two rapid beeps, then a pause, then 9 short, but not as rapid, beeps. I got no video.
Now when I turn it on, I don't get the beep codes, but still no video. I've swapped video cards, no result. I did a BIOS recovery, and got the beep codes again, but again, now I don't.
I have spilled drops of water on the board, but they've all evaporated (because they were small and were droped yesterday). I've also reseated the RAM. It could possibly by my PSU, I had to remove one of it's 3 fans (to make the tank fit). My fans work, I didn't pay attention to the voltages while in BIOS, only looked at them when frozen, and I can't recall their numbers.
Help.

If the video card works in another computer, then it is very likely that your motherboard is damaged. Nothing, really will cause artifacting of the video except the graphics card or the card is getting bad data from the processor.

If you have access to another memory stick or can verify the stick in another computer, check that first. I suppose that it's remotely possible that the processor itself is damaged, but IMO that is highly unlikely.
If you have a PCI video card laying around, try that... if the memory and processor are good and it's the AGP buss that is damaged, then you'll have a display.

Look up your motherboard/BIOS online and see if you can find out what your beep code means, that might be a better lead to what is wrong.

I figured out the no video part, bad video cable (it's a spare, I don't drag my computer to it's normal spot to check things). But now there's another problem. I think removing that 3rd fan has screwed my PSU. When I booted my computer with another, I didn't take note of the voltages, and BIOS doesn't have thearshold alerts. So I switched back to my normal PSU (around this time I discovered the bad video cable thing). Windows was taking forever to boot...it was hanging. So was Ubuntu, but Ubuntu Live works, and safe mode works. In safe mode I found the problem, the CPU core voltage is supposed to be around 3 volts, my PSU was giving it 1.2. I don't understand much about all the different voltages the CPU gets, but shouldn't nothing boot if one of them is too low?

With a low core voltage, the processor may operate until there's a load on it, so when you start running all teh background apps in Windows or Ubuntu, then the processor requires more power than the PSU is feeding it.

The fan has nothing to do with it, either the PSU is going or you have a questionable connection, likely with the main power connector to the motherboard.

You could also see if there is an adjustment you can make through the BIOS for upping the core voltage.

Keep in mind that software temp and voltage monitors are often off the mark... best way to check your voltages is with a multimeter.

I see no voltage adjustment settings in BIOS, I have the latest version (P34). It may be possible that in the proccess of putting my PSU back together I could've pulled a wired from it's solder joint. I'll have to check it later.

I am sorry, I guess this problem has been due to my impatience. After leaving XP to idle for atleast 15 minutes (that when I checked on it), it was at the login screen. Safe mode seems to have messed up settings, for there is no alert in normal mode, and the CPU core is fine at 1.5 Volts. These issues seem to be cleared up now (my only one is my processor temp is quite high, but I can fix that on my own). Thanks to all for attempting to help.