Any drivers needed for clean reinstalling Windows 7 should be in the installer, quickly available via optional Windows Updates, or on the Support Downloads webpage for your exact model computer or device.
You might have accidentally swapped out drivers thinking this was still XP or Vista which need imported drivers. MS spent a fortune so they would all be in the installer or via optional Updates.
You can try imaging your OEM install over to the SSD using Windows 7 backup imaging or Macrium Reflect. Backup Complete Computer - Create an Image Backup
But using the opportunity to rid yourself of the heap of HP factory bloatware makes Clean reinstalling as better option. You can even extract favorite OEM apps from your Recovery Disks using this method: HP 3rd Party Software After Clean Win 7 Install