Assuming there are no problems with the power and data cable connections to the drive and the drive isn't defective I'd expect the drive to appear in Windows. You didn't mention the place in Windows you checked for the drive. Click Start, right-click Computer, select Manage, in the window that opens on it's left side look under Storage and select Disk Management. The SSD might be completely blank and need to be initialized and formatted in Disk Management. You might see more drives listed there than you expected. Be sure you select the correct drive, the SSD, if you do anything. Don't lose any important data by re-initializing and reformatting the wrong drive. You can right-click Disk 0, or Disk 1, or Disk 2 in the lower central section of the window and select Properties to get more info about the disk you select before you do anything.
Did you try pressing the key to enter the BIOS setup while the screen is blank before you see the Windows 7 welcome screen? Your computer might respond to the pressed key even thought the monitor is blank. Your motherboard might have a couple different drive controllers- one controller by Intel that has some SATA III and SATA II connections and another drive controller by a different company. Did you try connecting the SSD to a different speed connection or a different controller to see if you get different results?