situation:

                I installed a skin pack(this http://skinpacks.com/download/windows-7/red-alienware-skin-pack/#.U5B1jRZWlUR), a few days later i felt that it wasn't nice so i uninstalled it.After the process,my screen was completely black,i did not really know what to do so i forced shut down my computer.(it works when i wanted to install the skin pack,i think that was a retarded move though) So,when i tried to start my computer,it just loads the logo then a black-lighted screen(usually will be the log in screen), the black-lighted screen then keeps changing from black-lighted to no lighted at all,it just continue to do this on and on(maybe forever).

What i then did:

                            So i went to google and find solution, i found solution like pressing F8 key to display the advance boot option in order to start in safe mood,but pressing F8 does nothing for me(don't really know if that method works though) After spending like 4h finding a solution,i decided to post in this forums.

Addition information:

                                     All i need is a solution to get my computer back to working state,i don't mind if my things get lost(nothing important in my computer any),but i would prefer to have my things still there.Everything is still working fine,the keyboard lights are the word "ALIENWARE" are still lit and i can also feel cold air coming out of the computer so i guess my fan is still alright.

Please advise me on how i can resolve my problem asap