Bootmgr missing on startup

[Nickpwnu]

I have a windows xp desktop that I installed windows 7 on. The installation failed in the process, the installation failed. Now when I try to start my computer it says bootmgr is not found

 

[johnb35]

Boot to the windows 7 dvd and choose to delete the existing partitions, then repartition and format then install windows. Backup your personal data or you'll lose it when you delete the partitions.

 

[Nickpwnu]

I don't want windows 7 anymore though I want it to be back on do since it's a crappy desktop

 

[johnb35]

If you want XP then you'll need the XP install media or hopefully you haven't deleted the factory recovery partition if its a store buught pc.

 

[Nickpwnu]

How will I manage to get to factory recovery partition

 

[johnb35]

Is this a store bought pc or a custom built one? You usually have to press one of the F keys to boot to the recovery partition. What brand of pc is this?