Hi guys, here goes. I got a comp from a friend, it's a ECS P4VMM2 rev 3.2a mobo and a 2.2 celeron. The comp was extremely unstable. I looked on the ecs website and found what I thought was the correct bios for it. I flashed it, and now when I turn it on I get long beeps that just keep repeating. I tried using a boot floppy to reflash it, but it can't find the a: drive. I found the article on hot flashing, especially using different motherboards. So I opened up my file server which has a Asus P2B-B mobo in it, and tried a hotflash. Here's what happens, I unhooked all un-needed hardware, hd, cd, etc. Boot from floppy to a dos prompt. I then use my chip puller and remove the p2b bios chip, no problem at all. Comp is sitting quite happily. I then place the bad chip onto the socket, and as soon as I push down on it and it contacts the socket, the computer beeps, and says a stack overflow has ended the session. It also says to modify my config.sys file. I put stack=12256 in there, and it still does the same thing. Then I booted it from my windows ME disk and went to a dos prompt that way. removed good bios, installed bad one and same thing. Stack overflow. Any help would be appreciated. Thanks in advance. Rob.