Error code on dell laptop

I would like you to try this step
1.Remove the battery and try to turn on again.
Update us with more information of this.
thanks

check with escape or delete

Crack Dell Laptop Password
U can search the above words via search engine and get ideal suggestion from search results!
Then, there will be solutions supported:
Step 1. Access other PC which isn't locked, download the Windows Password Recovery Tool 3.0, install and run it.
Step 2. Burn a password reset disk. You can choose CD/DVD or USB.
Step 3. Connect the nearly created disk with the locked Dell laptop, config bios setting to make sure it boot from the password reset disk, reboot the computer.
Step 4. Choose the user that you forgot its password, click "reset" button to begin crack its password.
Step 5. A message box will pop up, just click "Yes", then the user's password will be cracked to blank.
Step 6. Disconnect the password reset disk, and restart Dell laptop. You will login Windows with a blank password.
Hope it helps you!

Your Hard drive is missing, check it by opening the housing of your Laptop.

You can use Hiren's Boot CD: http://www.hiren.info/pages/bootcd Go down to Password Tools and choose either one of the following: Password Renew 1.1, NTPWD, WinKeyFinder 1.73, Offline NT Password Changer 2010-06-27).

vDell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-1520-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

can you boot to safe mode? try reinstalling ser pack 1 from a disc while there. the only problem i had with ser pack 1 was the sound drivers had to be updated. i will check microsoft techweb and see if i find anything. check back if i find anything i'll post back here.

Hi,

this is either a faulty dvd drive error message, or you have missing system files on the hard-drive.
The computer is asking you for the ( Media-Software Disk ) that is missing, and is required to start the computer.
Try putting your restore cd, or operating system in the dvd drive when booting the computer.

Mike @ Compurepair.

I had the same problem and came across this solution that worked for me as well:
Re: windows Vista will not start 18 Aug 2009 07:28PM I was getting a the same error codes and couldn't get Windows to boot up at all. I went to BIOS set up (restart your computer and hit F12 when the BIOS screen comes up), went to onboard devices and changed the SATA Operations from ACHSI (don't know how it got there) to the factory default setting ATA. Then I started up in "repair mode" (which was an option that was coming up when I tried to boot up before but never worked) - it went through a repair check and went to login screen.
Prior to finding this - I tried several things including start up from the Reinstallation disc, but nothing worked. I was ready to buy a new hard drive, but don't have to. Works fine!
Not sure what caused the problem to start with. It is an "Inspiron 1520"

I is my understanding that you can contact Dell with the service tag, and express code and get the master password to clear forgotten passwords.