i have an NF7-s v 2.0 xp-m 2400 and 6800gt
wow exact setup as me
And yes removing the battery would simply reset the CMOS which you've already done.....
When the monitor comes up but is simply black and your computer doesn't beep that means it's not posting at all and theres a hardware problem......it's either the RAM, mobo, CPU, or graphics card.....so basically you need to have JUST those things plugged in, mind you 1 stick of RAM at that since you're troubleshooting.
This is all assuming you thoroughly cleaned off the leaky area (ouch that sucks man
, did you get an RBX type CPU block or something...those have 3 barbs...and are a pain in the ***, this is why I got a TDX myself)
Hell if it comes down to it you might want to remove the motherboard from the case and put it on something that doesn't conduct electricity like a wood table......out there try turning it on, if it comes out then it looks like the mobo was being grounded in the case.
If it doesn't come on then remove the RAM....if the computer beeps (mind you of course to hear beeps your case will have to be close enough so you can hook up the PC Speaker)...anywho if it beeps then try reseating the RAM in there...if it goes back to no beeps and no screen then the RAM is faulty.......same theory and process applies to the graphics card.
So if it doesn't beep then something else is causing the trouble....mainly mobo or CPU....
I had my board do the same thing once and I had to take off the heatsink, pull out the CPU....put it in and for whatever reason computer came back up