Windows 7 - When I click "install now", it's saying "No device drivers were found"

Ok, now I get another problem... When I click "install now", I get a msg box that is saying 'no device drivers were found. Make sure that the installation media contains the correct drivers, and then click OK'

What should I do now?

Is the HD showing in BIOS?

Can you post your specs.
Filling out System Specs
Dont Know What Hardware You Have..??
VistaForums SysInfo Tool - Vista Forums

Will the HD show in Step one-Part 1 of this tutorial?
SSD / HDD : Optimize for Windows Reinstallation

When you say HD, do you mean my harddisk? If yes, then my hdd is detected both in bios or through windows..

- Intel® Core™ i7-2630QM, 2.0-2.8GHz, (32nm, 6MB L3 cache)
- nVidia GeForce GTX 485M 2,048MB PCI-Express GDDR5 DX11
- 8,192MB DDR3 1333MHz Dual Channel Memory (2 SODIMMS)
- Combo 8x8x6x4x Dual Layer DVD +/-R/RW 5x DVD-RAM 24x CD-R/RW Drive
- 500GB 7200RPM (Serial-ATA II 300 - 16MB Cache)

Yes, I can see my harddisk from the diskpart command.. I have also done the partition-step

HD = harddrive.

1) Give the DVD a clean.

2) Remove all USB device, not K/M.

How far can you go in this tutorial now:
Clean Install Windows 7

Step 4.. Btw I dont use DVD, I use bootable USB flash drive..What is k/m anyway?

K= keyboard.

Are you using a wireless keyboard.

Nah, no I'm using laptop

Try using the DVD.

Notebook what make/ model?