I have a file server running Windows Server 2008 R2 64bit, with an Intel 915PBL motherboard and a Pentium 4 620 processor, with 2 GB of memory. Yesterday, it started booting just to the Intel Pentium 4 Motherboard splash screen. There's no option to enter the BIOS.
I pulled out the hard drive and ran chkdsk on it using my regular desktop. Chkdsk reported no bad sectors, and Acronis Drive Monitor reports that the drive is functioning at 100%. It will not let me boot to a copy of Ultimate Boot CD, either. I'm not sure where to look next.