I have been unable to find any info on the net about this, so hope that MDL people can help. I just built a new machine using Asus M2N32-Sli Deluxe motherboard, installed Windows 7 x64 and got everything working fine. I flashed the BIOS to Beta 5002 and reboot, everything still working fine. I then used AwardTool.exe to create a SLIC version of 5002. The tool did verify OK at the end of the procedure, but I noticed there was one error in the log...something about an extra hash. I flashed the BIOS anyway, and PC booted up into Windows OK. I then checked Control Panel/System info and windows activation still said 30days grace period. So I thought SLIC didn't work properly, and then made another SLIC version of the BIN file. Restarted, flashed again, and when booting into Windows., got a BSOD. When I reboot and look in BIOS, I see in Basic tab, that Installed Memory was 0KB. Previously, it detected the 4GB RAM installed. Now it was only detecting 127KB usable memory... I allowed boot up to continue and got the Boot manager screen with options to boot Windows normally or do a windows system repair. I thought I would try a repair even though I didn't think it would help. I inserted Windows disk and ran repair, but got message "Insufficient RAMDISK memory, unable to continue" or something like that, then it went back to boot manager window. So then I re-flashed the BIOS with the original 5002.BIN file, and reboot, but BIOS would still not detect installed memory. I then rolled back to 2205.BIN version, but still same problem. I then tried to clear CMOS by removing clock battery and switching jumper for short time, then back. Rebooting, still the memory is not detected in BIOS. I then saw nijel's post in "BIOS-Recovery-procedures" thread about shorting the BIOS chip pins to get it into BIOS recovery mode, but it did not work for me. A techie friend suggested I reset DMI pool data, but I cannot find any options in BIOS to do this, and only references on the web that I checked, mentioned DMI pool data in relation to XP, whereas I am using W7x64 So I am really stuck. Can anyone give me an idea what to do next? thx, Antra EDIT: RAM is Corsair XMS PC 6400 DDR2 which I have had in 2 other machines and never had any problem.