Hi all I have pc running xp x64 edition with 2 sata drives installed. 1st drive holds os, 2nd drive holds My Docs. Originally, the drives were in 2 pc's with xp installed on both. I have reformatted both and re-installed in a single pc. I installed xp on 1st drive, and 2nd drive has My Docs. Everything was working fine until I installed asrock cool n quiet. Now, when I boot up, I get an os choice menu: Windows XP x64 edition OR Windows XP (Default). If I select Windows XP x64 edition, all is ok. If I select Windows (default), then the boot fails with error "missing file ntldr" The file boot.ini does not list a second os and is as follows: [Boot Loader] timeout=30 Default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS /usepmtimer [Operating Systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP Professional x64 Edition" /noexecute=optin /fastdetect /usepmtimer This is not a major problem, as I can always select the correct os. But annoyingly, if I forget and walk away from the pc whilst booting, then it auto selects the incorrect os. any ideas? many thanks