Windows XP Blue Screen

I got blue screen often on one my xp machines. This solution(s) worked for me.

Run CHKDSK

1. Go to command prompt (Start -> Run -> type cmd -> press enter).
2. Type chkdsk c: /f 
3. Press Y if it says ( Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N) ).
4. Restart the computer.
5. Chkdsk will run when the computer restarts.

Fix Bad Sectors on Hard Disk

1. Go to My Computer.
2. Right Click the hard disk and go to properties.
3. Click the tools tab.
4. In the Error-checking box, click Check Now. 
5. In Check disk options, select Scan for and attempt recovery of bad sectors check box. You can also select the Automatically fix file system errors check box. 

Fix Registry

1. Fix the registry 
2. I used a free software called Advanced System Care 
3. Download, Install and follow the instructions.
4. Run the software and scan everything.