is my hp loptop is good enough to play BF3

OP since you didn't post your specs here are the minimum and recommended specs to run BF3:

Minimum requirements for Battlefield 3
• OS: Windows Vista or Windows 7
• Processor: Core 2 Duo 2.4 GHz or Althon X2 2.7 GHz
• RAM: 2GB
• Graphic card: DirectX 10 or 11 compatible Nvidia or AMD ATI card, ATI Radeon 3870 or higher, Nvidia GeForce 8800 GT or higher.
• Graphics card memory: 512 MB
• Sound card: DirectX compatibl sound card
• Hard drive: 15 GB for disc version or 10 GB for digital version

Recommended system requirements for Battlefield 3
• OS: Windows 7 64-bit
• Processor: Quad-core Intel or AMD CPU
• RAM: 4GB
• Graphics card: DirectX 11 Nvidia or AMD ATI card, Nvidia GeForce GTX 560 or ATI Radeon 6950.
• Graphics card memory: 1 GB
• Sound card: DirectX compatibl sound card
• Hard drive: 15 GB for disc version or 10 GB for digital version

You mentioned being an HP laptop, unless it's a gaming laptop with two GPUs (a normal use one and a high perofrmance GPU) most laptops are not able to run BF3 due to GPU limitations.