i have a 2002 Nissan fronther that won't start like there's no power to starter but everything else works fine

It may be the starter itself. A starter that has a failing solenoid will work at times and will not work at other times. The longer you wait before replacing it ( if it checks out that that is what the problem actually is ) the worse the problem will become until it just stops working completely. You can check it yourself with just a 12 volt test light ( a cheap one will only set you back a few dollars at any auto parts store ). First, check that you have 12 volts and good ground at the starter connections -- Use the starter ground post to ground the test light and check for battery voltage at the starter battery post. Next, check that you have IGNITION voltage at the starter solenoid ( while someone is turning the key ). If you DO have 1). Battery voltage, 2). Good ground, 3). Ignition voltage and all of your connections are tight, you have ruled out a failed ignition switch and the circuits between the ignition switch and starter. If, on the other hand, ANY of these circuits do NOT check out, that is your problem and you will need to trace the lack of voltage / ground until you find the broken / loose wire, burned fuse or relay or, failed ignition switch. Good Luck !

... By the way, other possibilities could be a failed clutch pedal switch ( if you have a manual trans ) or neutral switch ( automatic trans ). You said that it started when you "hit the panic button" ( what panic button ? ). If it is a manual trans and you have a "Clutch Cancel" switch, try pressing that and trying to start ... If it starts when pressing the "Clutch Cancel" switch then the problem IS your clutch pedal switch. Just something else I thought of after submitting my earlier answer.

Thank you for the answers i have found the problem and come to find out the dealer had installed a tracking device on it and the chip bracket has been broken and the chip was just hanging on by tape that there mechanic had put on it but again thank you for the help

I replace my ignition on my truck and didn't start and no power. All ignition wire and connector looks good and no loose. Checked all the fuses and found 2 that are busted. I replaced it one (100 Amp & 20 amp) that's under the hood. But still no power and no start. Where do I look next?