My d7000 has stopped displaying pictures I take?

My Nikon d7000 no longer displays photos I've taken. It's just black. Even when I try to view them in my computer it's still just black. I've chafed my memory card and it's still same.

Yashica Film SLR lens to Nikon DSLR lens compatibility with the help of an adapter?

Here are the facts. I really need an expert opinion on this one.

1.) I have a Yashica 50mm ML lens from my FX-7 film SLR camera.

2.) I have a Nikon D5100 Digital SLR.

3.) I want to use that 50mm ML on my D5100.

4.) I saw an adapter for a cheap price that says "M42 Lens to Nikon Body Adapter" with a description of "Make M42 mount lenses (Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on NIKON cameras"

5.) I've read several articles about the relationship between Yashica and CZ lenses but I just don't get it.

The main question now is, will the 50mm ML work on my Nikon DSLR if I buy the adapter? Thanks a bunch!

Added (1). I'm aware of the hassle that I will be going through, like having an all manual setting (with no light meter), and not being able to focus to infinity.

Added (2). about the main question, that should be "will the 50mm ML 'successfully and perfectly mount' on my Nikon DSLR if I buy the adapter?"

What should I do with my Nikon D7000?

I purchased the camera in 2011 and it was a good camera (though I could never get a super crisp shot no matter what I tried) but now my D7000 got a shutter failure. Honestly I don't even want to bother getting it fixed because 1. It is expensive to get it fixed 2. I'm pretty sure the sensor was scratched by the messed up shutter which will cost a lot more for nikon to replace 3. It would probably fail again very soon 4. I was never completely happy with my D7000's images (I used my bros D3100 and the photos look way better IMO). I don't know what to do with the body. The top screen is also broken (I tripped running up a staircase a while back and the screen broke).

So, what should I do with my broken D7000?

Why does the iso on my DSLR get worse as my camera gets older?

I've owned my Nikon D60 since 2008. It used to take some pretty nice photos at an ISO of 800. As it's gotten older the ISO quality has slowly degraded. Photos taken at ISO 400 began to look like they were taken at 800 and now images taken at ISO 200 looks pretty bad. It's so. Incredibly. Grainy!

Thoughts? Suggestions? Any help would be appreciated.

Sunpak DX 8R Ring Light/Macro Flash compatibility to new dslr?

Did not realize and purchase a Macro flash that was made for film slr cameras
It comes with a Nikon adapter. I have read forums that stated older flash has higher voltage sometimes

I found out the nikon d3100 is a 250 v
the sunpack is 6 volt

but then I also read the the trigger has a different voltage which is usually lower
but I can't find anywhere that tells me the voltage of pc socket on the nikon
any input?

Nikon 35mm 1.8 lens for Pentax K1000 with 50mm lens?

I'm thinking of trading the nikon 35mm 1.8 lens for a Pentax K1000 slr with 50mm lens? Is it a good idea? My d7000 broke so yea, and I don't really want to borrow my bros d3100 all the time to shoot with it…

Is it a good idea?

Does the Sigma Ex Apo 70-200Mm 1:2.8D F/2.8 focus on the Nikon D5100?

Does the Sigma Ex Apo 70-200Mm 1:2.8D F/2.8 focus on the Nikon D5100?

Added (1). I'm wondering if I need to focus manually or if it will auto focus many thanks

Will this lense focus on the Nikon D5100?

Www.ebay.co.uk%2Fitm%2FSigma-Ex-Apo-70-200Mm-1-2-8D-F-2-8-Lens-Nikon-Mount-%2F281387438259%3FssPageName%3DADME%253AB%253AWNA%253AGB%253A3160%26nma%3Dtrue%26si%3D4K1eAFuNG10G5z2mZ0i%25252F9Avp3Bg%25253D%26orig_cvip%3Dtrue%26rt%3Dnc%26_trksid%3Dp2047675.l2557&h=iAQGwCPsk

(Sigma 70 - 200 2.8 Hsm Nikon Mount)

DSLR OR POINT AND SHOOT?

Hi. I'm looking for a camera.
i'm having choice in point and shoot nikon L830 and dslr nikon d3100 or d40

i have read lot of reviews about nikon L830 and i'm little bit satisfied but the one issue is it uses alkaline battery. Where nowadays even digi cam comes with lithium battery.

if i go with dslr it is bit costly as in dslr cam every year new model exists and replaces the old one.
as i'm not professional one i adopt to be a photographer.

so i'm confused whether to buy point and shoot and can later buy a good one or
one dslr which i can use lifelong. So please help to take correct decision.

Where is the cheapest website to buy a DSLR camera?

I'm looking to get into photography and looking
To buy a Nikon d3200 and trying to find the cheapest places before buying it

If you have a website please leave a link