doston mein jab koi bhi cd apney cd rom mein insert karta hoon to 95% cds blank show hoti hayn jab k doosrey computers par sahi chalti hayn.

windows 7
combo rom
3.0 ghz processor
core 2 duo
ram 4 GB
hard disk 80 GB

please koi help karo windows 7 professioanl hay mairey paas