Http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/AutoCAD-2010-does-not-start.html Issue: When you try to start AutoCAD, you briefly see the splash screen and the program does not start.
Solution: This behaviour can be caused by corrupted license information. Please check if there are any errors listed in the ACD2010ENGAdlm.log file in the folder: C:\Documents and Settings\All Users\Application > Uninstall all installed 2010 products
Answers & Comments
Http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/AutoCAD-2010-does-not-start.html
Delete the ADLM folder mentioned above, and Reinstall the products
Issue: When you try to start AutoCAD, you briefly see the splash screen and the program does not start.
Solution: This behaviour can be caused by corrupted license information.
Please check if there are any errors listed in the ACD2010ENGAdlm.log file in the folder:
C:\Documents and Settings\All Users\Application > Uninstall all installed 2010 products