Hi ya'll, I'm kinda new here so please be patient. I have and older E-Machine W1500 with a AMD Athalon XP 1600 processor, (And yes, I had already upgraded the P.S. to a 350watt) Everything works great. Last week a friend of mine gave me his dead E-machine Model# T2460. It came with a AMD Athalon 2400 XP Processor. (Guess he didn't upgrade his P.S. soon enough) So I said to myself..."Self? Why don't I take the 2400 processor out of this dead machine and put it in my W1500/1600 machine as an upgrade?" So I did and it does run fine. I put a Nvidia G-force 5200 128MB videocard and wow! this machine screams! I then went into my device manager to check out the processor and I saw a "Unknown Processor" message in the sub-folder. Now my W1500 came with a AM35 board and this dead T2460 came with a AM37 board. Someone said to me, I needed to upgrade the bios versions for the 2400 processor chip. So, My question is, How can I do this? Do I log on to E-Machine support and download the bios version for the AM37 board which came with the 2400 processor? or do I download the bios for the AM35 which came with the 1600 processor? Did E-Machine ever put a 2400 processor in it's older AM35 board? Any solutions from you fine geeks? Thanks.