I have had a succesful tri-boot system for the last 6 months thanks to EasyBCD. My main OS is Win7 on an SSD. On a multi partitioned HD I also have a Win7 backup and XP Pro. 10 days ago I upgraded my mobo, CPU and RAM because the old stuff was aging and odd things were occasionally happening. The system booted right up as usual and I've worked without an incident (SSD Win7). Yesterday I tried to boot XP to use a program that doesn't work in W7. I got my first bsod of the new build. I rechecked my EasyBCD settings and tried again. Now I get the corrupted NTLDR message when trying to boot XP. If I try to boot to the backup W7 (on the HD) I get a bsod after the logo starts loading. I went thru all the motions again in EasyBCD for setting up a multi boot system, but the results are still no good. Any ideas? Thanks.