a few months ago i ask my mom if i can use her laptop to finish my media log homework. She has a toshiba Satellite L45 laptop with windows vista home premium. when went on her laptop i forgot to ask to log me in to her computer (password protected) and i was to late to ask to put it in for my (she went to sleep and i dent wake her her up unless the house on fire , im bleeding, and so on you get the point)
well put kubuntu live cd in and went to try without installing meaning it runs an operating system on the cd (it never touches the hardrive without permission ) i finish my homework my mom woke up she was like weres my laptop! . i told her i have it and she didnt remeber me asking for her laptop and kubuntu was still on running she was trying to take the cd out but cd never comes out unless it fully shut down properly and she was getting mad she hit it and hit (acting like a mad ape wanting a banana )and the disk was making a scrathing noise . she told me to take it so i shut it down and took it she tried to log in to windows boot it sayed one of the registry files is corrupted and she think that kubuntu mess it up but i was trying to tell it never touch the harddrive . and she wasnt buying it so she told my you got 48 hours to fix it and so i did but i had to erase the hard drive and i install windows 7 (my teacher gave me 5 copies 
) and it took 5 hours to install it (not lying ) once when it was done it was fast for 2 days and my mom was kinda satistfied with but then it was super slow like it took 30 minutes to get to the login screen and then it keeps showing the blue error screen and keeps automatically restarting it was really annoying . but after 3 days later it showed the same error that showed on vista my gave up on the laptop and she still blames me for it but then i put fedora on it and it was still super slow so i took the harddrive to take a look at it thes a dent on it . and i remeber when mom was hitting the laptop thats was cause
(note windows requires a harddrive speed to run but that dent explained every thing vista was fine but that speed was reduce and it wouldnt runbecause of thAT DENT
my question is what can i do to at least make it to that the requiment speed again because if try to undent i dont if it cause a leek (then it will be gone forever ) and please dont say buty a new harddrive my i dont want to break the news to my mom about buying a new harddrive
please help my with this im out of ideas
