My laptop started giving me problems so I decided to format it. After the formatting was over I decided to install all the programs that were there earlier. I found the windows xp program CD which I had used earlier, but when I tried installing it I found out that there was a problem. The computer kept on asking me for the password. I realized that i forgot my login password for windows xp. I searched everywhere hoping that I must have made note of it somewhere. Since I had initially used this CD two years back I decided to check my billing file where I stored all the bills. Luckily I had mentioned the password on the back of the bill received when I had bought the CD. I entered the password and it worked. I installed the xp program and found that it was working perfectly. I decided to save the password so that I did not have to face the same problem if I decided to install the program again in the future.