Re: blue screen with bird - bad hard drive?
When you get this screen;
Wait a few minutes till the hard drive activity is hopefully idling,
Press the CTRL key and the ALT key and the Del(ete) key together,
On the menu select "Start Task Manager",
If the mouse is not working use the down arrow key to move the faint highlight and press enter.
If task manager launches then select "File" > "New Task" (Run...)",
In the box type "explorer.exe" with no quotes and press enter.
That should get the desktop back.
Now find the command prompt icon in Programs > Accessories and right click. Select "Run as Administrator". Answer the UAC prompt.
In the black box type "chkdsk c: /F" with no quotes and press enter.
Press the "Y" key and enter to answer the next prompt.
Then type the word "exit" and press enter to close the command window. (Without the quotes.)
Restart the system and let chkdsk run.
Or tap the F8 when the Dell logo appears at power-on and when the menu appears select "Safe Mode". When Windows starts follow the same instructions about the command prompt to initiate chkdsk.
If all this fails then your hard drive might have a bad sector on the hard drive or a virus infection.
Use F12 at power-on to boot the diagnostics and test the drive. If drive is good then post in the ant-virus forum.