Ground Fault Circuit Indicator
One other possibility is you wired the new GFCI incorrectly. There is a difference between line and load. Not all GFCI outlets have the identical "configutation". That is, some have the hot line at the top, others have it at the bottom. Same for the load hot.
At this point, I'd bring in an electrician. No offense, but electricity is dangerous and you have not grasped the basics yet.
BTW - the I stands for Interrupt, not indicator.
GFCI receptacle flaky?
Aging Electrical Wiring in the USA
Installing and Testing Ground-Fault Circuit-Interrup...
- 15 Old House Features We Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- 16 Designs for a Low-Cost DIY Coffee Table
- Insanely Easy 60-Minute Home Improvements
- 12 Sheds You Could Live (or Work) In
- Assembly Required: 15 DIY Kit Homes
- 30 Things Every Adult Should Know How to Do
- 10 Surprisingly Simple Woodworking Projects
- See the Most Highly Anticipated Colors for 2015
- 9 Ways to Make Your TV Look at Home
- 9 Totally Amazing Mobile Home Makeovers
- 10 Unexpected Spots for Accent Colors
- 10 Fantastic Furniture Makeovers
- Worth It: 8 Renovations That Pay You Back
- 9 Closet Storage Tips from a Pro Organizer
- 7 Seriously Surprising Spots for a Fireplace
- Laundry Room Ideas to Knock Your Socks Off
- 12 Tiny Gardens to Grow on a Tabletop
- Supersize Your Small Bathroom with 8 Tips
- Kitchen Envy: 10 Rooms We Love