stucked in problem with Multi OS system..........want to resolve these problem ?

It ask you because in whatever drive you install your OS, some boot files records are always saved in C drive. As you now have Vista in C drive, the BCD file(in short Boot file) of Vista is updated with entries of Windows 7. So, now you have to remove those entries of Windows from the BCD of Windows Vista. But you can't do it with notepad or anything else. For this task, you need a BCD editor. So, my choice for this would be Vista Boot Pro(freeware) or Easy BCD edit. Good Luck..

there is a way to solve you problem, if you are satisfied with vista and want to keep i can solve that problem, no need to install any os but you need to edit the bootx file which is recorded in c drive and main file to start any windows.here is the way: format d: drive were you have installed both the windows now check for a boot file in c: drive which is hidden open it and you will find name of windows in a coded fashion, not to worry, in coded too windows version names are used and for each windows a separate line is used. delete the lines with windows xp and windows 7 don't delete windows xp line, you need to once again install the os. if there are any doubts be free to ask me....

Actually when you reinstalled to one OS you did not reformat completely or cleaned completely the HardDisk Drive that's why the Master Boot Records (MBR) are still intact on some partitions, but primarily on the first partition or the "C" drive. ok first, hard disk partitioning for SATA only (this based on my experience... a true to life story )..... There are two parts or divisions of HardDisk Partitioning and a pre-requisit or primary requirement of an OS like MS Windows. The first is the "Primary Partition" and the other is the "Extended Partitions" Primary Partitions can have up to a limited of 4 volumes or 4 partitions only. MS Windows boot systems or the main systems mainly installed here only. You can also put a partitions for user files or a "Program Files" partitions but it is not good enough because you may have plan to use those partitions like additional MS Windows OS. Extended partitions... can have up to 24 volumes or partitions here these were multiple partitions should be. It is good for any use you want. You can not installed any MS Windows here. Linux OS can installed or do some multiple partitions or volumes. This is the very safe to put User files or anything..... You have to ENABLE first the Extended Partition after having the Primary Partition. Then create the multiple partitions or volume on the Extended Partitions. For a better partitions use a Dos application called FDisk. But the best is a Live CD or USB Thumbdrive of Linux Ubuntu and use the "Disk Partition" under the System Menu. The Linux Ubuntu "Disk Partition is very good for partitioning because you can move your precious files on different volumes or partitions. Installing MS Windows technique on multiple boots..... You have to installed first from Oldest to Newest Ms Windows to have a better and functional multiple boots. And if you want to install a Linux OS like Ubuntu it should always the last.

I suggest that you back up all important files to a different hard disk drive and then reformat everything. I would also suggest using XP because it is still so far the most stable OS for Microsoft desktop. Good Luck!

You could try deleting the partitions and just leave yourself with the c partition, that should sort it out for you.