I just updated my asus m2n4-sli bios and now my system will not boot. It gets hung up on the bios boot ups screen where it shows the Asus logo. even though it says hit Del to enter the bios, i can not get in. If i hold del down after starting I get a "Enteering Setup..." but it goes no further than that. I have even tried reseting the CMOS via changing the jumper and removing the battery, but it does not change anything. I just got a 2nd graphics card, identical to the first, and enabled SLI mode. Once I did that, my computer would restart itself after a few minutes. When i disabled sli mode, computer ran fine. I swapped out the video cards and got the same results. I read that updating the bios could help fix this problem. It's not a heat issue, I have monitored the temp up until the computer would reboot itself. Any help on either one of these issues would be greatly appreciated. Thank you for your time.