Upgraded from 1.6Ghz to 3.06Ghz and from 512 to 1024 RAM on Dimension 4500. POST messages and RAID initialization flash by at warp speed but then it takes over three minutes for the welcome screen to appear. Once Windows does boot up, again, everything runs at warp speed. I know several people have experienced problems with the 3.06 processor, but it cannot be the problem because I am experiencing no overheating problems, (ran Sisandra burn in at 100% cpu utilization for 4 hours without a hiccup and CPU-Z showed no drop in speed). Reflashed and flushed BIOS, no change. Everything runs great before and after Windows boot. Sysinfo shows processor and memory as they should be. Boggles my mind that something as straightforward as a processor and memory upgrade could mess up Windows boot speed. Any suggestions? Might a clean reinstall of Windows be in order despite the fact that everything runs great once it boots? Probably going to upgrade to a 4550 soon to take advantage of hyperthreading with the new processor in the near future anyway, so I probably can live with the long bootup till then, but if anyone has any ideas, I'd like to hear them.

 

Thanks,

Kevin