Computer won't boot =/
 

So yesterday I did everything I normally do, surf the internets, play some games for a while, music, etc. I turned it off no problem. Then today when I turned it on, it wouldn't POST. Like every fan would start spinning at 100% but nothing will appear on the screen. I saw the little 4 lights and it showed

Top right Red
Top left Green
Low right Green
Low left Red

I think it's the Bios Sign up thing. So I cleared the cmos and still didn't boot. I unplugged everything, plugged it all (After checking and unplugging each device separately) again, and it boot. Is this a hardware issue? It's the first time it happens.

Thanks.

i have no idea what were the 4 lights..
do u have a second pc to test on?

It's the four lights on the back of your case, usually the lower part, it's the USB JDB1 connector (MSI K8N Neo4 mobo).

does anyone know why would this happen?

well i take it you have internet access.... google the error codes for that motherboard... those lights are for diagnostic purposes and will tell you whats wrong ;)

Yeah it's the Bios POSTing the processor memory etc, it just hangs in there and doesn't post anything =/ it hasn't happened before though so I wouldn't know why did that happen...

Did you just take out the battery when you rebooted your CMOS? I found out the hard way that that sometimes doesn't work on modern motherboards...
If you've only taken out the battery to reset things, put it back in and try this:
Is there a 2 pin jumper/connector near the CMOS battery? If there is, does it have 2 pins or 3 pins?
Should look something like this:
http://members.aol.com/don5408/uaskb/jumper.gif

If so, try moving the jumper from the original position into the second position, as shown in the picture. Boot your computer, and if it loads into the BIOS, then shut down and place the jumper back to its original position.

Good luck!

Could be the CMOS battery itself, I had to replace my boards battery when i first got it from an overstock dealer.

it's not a battery, it's a button I just have to press for 5 seconds and it resets. I don't think it's a problem with that though since it has never happened before.

here we go....
all you have to do is go to this page: http://www.msicomputer.com/support/sup_tshoot.asp#1_4

possibly you have the clear cmos switch in the incorrect place... this would make most sense

If it still worked yesterday..that's strange.