Coolpix L21 won't turn on anymore.

[BuBu Shofronea]

Last night, after i did some pictures, i had to send them to someone through an email. To do that i had to use the USB cable to download the photos to the computer. The problem was that the cable was broken and i had to reconnect all the wires ( twisting them up ; each color with the same color ). After i did that i connected the USB cable to an USB port from the computer and then to the camera. I pressed the 'turn on' button and the screen went black, but the button light were still there ( that green light ). I waited like 5-6 mins but nothing shown up on my computer. When i checked the camera, the green light was off. I tried more times the same thing and nothing. After i took out the cable, i tried to turn on the camera but it didn't turn on. I reconnect the cable to the camera and to the computer and it did. Then again i tried to turn on the camera and, when it turned on, the lens were stuck in there. Turned off, turned on and then it said " This card cannot be used" so i changed the card and it said the same. I tried to power it on without the Card and there was the problem with the lens which gives me an error after 3 seconds after turning on "Lens Error". After i searched on the internet for this, i let the batteries to recharge over the night, and now, in the morning, when i tried to turn on the camera again, it won't turn on, not even if i try to power it on with the USB cable. I also tried changing the batteries with 4 other types ! but didn't work...
What do i do !?

 

[i7Baby]

The problem was that the cable was broken and i had to reconnect all the wires ( twisting them up ; each color with the same color ). - might have something to do with it. Maybe you shorted out the camera. Recharge the battery and try again. I think you've voided the warranty.

 

[BuBu Shofronea]

The problem was that the cable was broken and i had to reconnect all the wires ( twisting them up ; each color with the same color ). - might have something to do with it. Maybe you shorted out the camera. Recharge the battery and try again. I think you've voided the warranty.

Well, as i said, i did recharge the batteries, but i'll try again x.x

 

[i7Baby]

Then I suspect you've damaged the camera.

 

[BuBu Shofronea]

Then I suspect you've damaged the camera.

Well, i guess that too, but how do i repair it? Because i doubt a ******* USB cable could destroy an entire camera, only it's software, so how do i do a reset ?

UPDATE : So i somehow managed to turn on the camera by plugging in and out the USB Cable, but now it says "This card cannot be used". I also tried to turn it on using another card and it says the same... Japanesse cameras x.x

 

[i7Baby]

Its almost impossible to repair cameras. I've had several and tried. You'll need to replace your camera.

Only use good condition HDMI cables. Not ones that you've repaired. Cables are much cheaper than cameras.