bah! I just dont understand why people would do this. Not picking on you dude, but man it terrifies me when I get NEAR my computer to look at something inside while it's on. I had to hotflash my BIOS once....that means you put in a BIOS chip that'll just get the computer to POST.....then while the thing is STILL ON, you REMOVE that old BIOS chip, put in the corrupted one, then you can flash it.......that freakin scared the crap out of me doing it.
There are so many cases of people plugging in power while the computer is on........WHY!? I have to ask why.......takes 2 seconds to shut down the computer, why would you think it's OK?
HOWEVER, I will tell you that SATA drives are hot-swappable......this means you can switch them out when the computer is on. Those would of course need power, but they have the option of your normal 4pin molex OR a SATA power connector (for WD SATA's anyway)
Anywho, sorry, like I said, I'm not trying to pick on you, obviously you feel bad enough, I can just never figure out why people try that.....you aren't the first though. I've seen this thing happen many many times.
Oh well, anywho, let me get this straight though.
You plugged in the power to the floppy, and the computer was still on correct? So it didn't just like shut down as if something happened when you plugged it in? And you were able to reboot as normal right?
Well......in that case lets try some extreme CMOS resetting
Put the jumper to the reset position (MEANWHILE MAKING SURE YOU HAVE ALREADY TURNED OFF THE PSU)
Now flick the PSU back on. Some people choose to even hit the power button at this point, which will cause power to go to the computer but not boot.....personally I wouldn't suggest it...I've got a friend who swears by it though.
wait about 5 seconds after you've turned the PSU on then turn it back off. Hit the power switch. This should drain any energy of the capacitors. Move the CMOS jumper back to it's normal position, power on the PSU and try out the computer.
If that doesn't work, try all the aforementioned things, but then instead of putting the jumper back to it's normal position and powering up, pull out the battery and leave it like that for a few hours.
Come back, replace the battery, put jumper back in normal position and power on
(PLEASE, remember to turn OFF the PSU when moving the jumper and removing the battery)
Good luck. When it's something like checksum error, theres no way your board should be completely messed up.
Also........make sure the keyboard is thoroughly plugged in
PM me or something if it doesn't work as I rarely visit these threads so more than likely yours will get pushed down and I wont see it again.