A8n-vm csm/nbp CMOS Checkum Bad Hi, Searched the forums and found nothing, not even for A8N. I have modded the original BIOS for this board (0114). However, when I try to boot the Windows 7 installer, either from USB or DVD, after POST, I just get a flashing cursor, top left, second character down and the leftmost column is full of capital H's from top to bottom!!!! Never gets any further. There is a Beta BIOS for the board on the ASUS site (0119), so I modded this. The 0119 version will boot from either USB or DVD and I am able to install Windows 7. However, EVERY time the computer POSTs, I get CMOS Checksum Bad F1 or F2. No matter what I do (including CLRCLK and removing the battery) I can't get that checksum error to clear. I performed the above using AFUDOS2.38 (and AFUDOS2.21) and I also tried using the ASUS Update Utility from within Windows 7. The problem is exactly the same with both the unmodded BIOS files too. Any ideas, A) Why there is a column of H's using the 0114 BIOS when trying to boot Windows 7 and, more importantly, B) how can I clear the CMOS Checksum error?