I would first like to point out that I am extremely new to running different operating systems (dual booting etc.) and Linux in general but after having continous issues with XP, trying Linux i considered was a viable
Option. I installed Ubuntu 13.10 using the live USB method (created in universal USB creater) and it installed fine as a separate partition. When it started up for the first i noticed that it was running pretty slow e.g. the menus were sluggish. After a serious session of googling, a potential solution was to update/change the display driver but ultimately did not improve the issue . Consequently, i opted to get rid Ubuntu in order to downgrade or find a lighter version of linux altogether and i did this, perhaps mistakenly, by deleting the paritition using XP. Now when i turn on my pc i am greeted with a black screen and a message that says partition missing...After another intense googling session it seems that many solutions begin with the verification of its filesystem name using "f disk -1". However, the command comes up that "-1" is invalid and does not list the filesystem name. After a couple of long nights wielding no results, i thought it was time seek expert help and any help is greatly appreciated

Thanks in advance 

Antony