I have this Samsung R20 laptop with 4gb ram, 2.2ghz Dual Core T4400. I had this early signs of taking too long (35 to 45 minutes) to boot up. And I decide to format the PC. I installed new windows 7 which took so long before finishing installation. I've changed my harddrive, changed my RAM. But the PC still extremely slow. I have try all my possible best to solve this but all in vain 😢. Please I really need your help. I'll always be ready to give you any information you need about the PC. Please help me🙏🙏