how to fix hp G62 laptop graphics bulet in ic?

Hi,

Please do try these troubleshooting steps that may help in solving the issue.
- Start by connecting an external monitor and see if you'll get a display from it.
- If the display will work on the external monitor press the Windows key + P at the same time and select Computer Only or Disconnect Projector.
- Next is to check the ribbon cable that connects the LCD to the motherboard.
- You can try to unplug/plug the ribbon cable just to make sure everything is seated properly.
- Worst case is if all these will not work that means replacing the LCD display would be the only solution.

Here's a replacement screen for your laptop:
http://www.ebay.com/itm/HP-G62-New-15-6-LED-LCD-Replacement-Screen-G62-340US-G62-347NR-435DX-/201143815031