Black Screen with cursor

Registration date
Saturday June 15, 2013
Last seen
June 15, 2013
- Jun 15, 2013 at 04:07 AM
I have ubuntu 11.10 installed along with windows 7 home premium 32-bit in my compaq presario cq-61 laptop.In the startup menu when i open windows 7 loader then suddenly a black screen with cursor opens.I am really sad as this is my pre installed original windows 7. The problem is I dont have recovery disc and my recovery partition is also not working. So only option I am left with is to either buy new windows or fix the black screen. I prefer the latter one. So please help me.
I tried system repair but it resulted in nothing:(:(:(