Compu w/ Asus A8N-E won't boot at all

[nicmac888]

Hi there!
My computer shutdown normally, i restarted it for some windows updates.
Now, whenever I try to boot it, it just gets stuck at my motherboard (A8N-E) logo page, before reaching POST or whatever.
It just stalls and does nothing. Drives don't seem to be spinning, the fans are on but that seems to be it.
I cannot access the BIOS, cannot do anything but try to restart (does the same thing again) or just turn it off.
My power supply is rather new, and as I said, the computer shutdown normally, there was not bug or crash afaik.
Any ideas?
Thanks a lot!
Nico