Can’t boot XP

I am hoping you can help me with this please. I have a P4 mesh elite (yes I know) 300gb/1024mb
It is 3 months old and twice I’ve had a start up problem, the first one was resolved with the repair disc pressing R and it was fine.
This time its different, the system starts and goes through all the checks and then hangs at the xp page where it is just going to show you the users.
I cannot get into safe mode as it does the same, or anything else on that page of options.
I cannot do a repair as there is no option on the disc ?
I can get into the repair console and I’ve done a scan and a chkdsk /p and /r but I’ve no idea what else to try there.
And the only options I have on the repair disc are to partition or remove folder that xp is in and put a new installation in.
Please let me know if there is any way around this? michelle