Hi. I have Thinkcentre A52 model 8167-72g with slic 2.1 modded bios from this thread LENOVO-(IBM)-Bioses-especially-Thinkpad I change my pentium 4 cpu with Celeron 331 and now have cpumicrocode error when i start my system.Plz dont ask why i doo that stupid change. Soo i need any help how can i update cpu microcode to support this cpu. Thx. Sry if i have put this in wrong place,and sorry for my bad english.