When I put into my camers Nikon D40 IT SAYS IT IS LOCKED?

Hej,

Du kan ladda ner handboken genom att klicka dessa lankar.

Nikon D40 svenska handboken

Nikon D40 engelsk manual

Tack for att anvanda FixYa.
________________________________

Translated using Google Translate

having experience with nikon repair service i would say it is cheaper to replace this lens.

Step 1: Determine whether you're referring to a Canon 40D or a Nikon D40.
Step 2: Repost your query, being sure to include the information from Step 1. It would also help if repost your query in an appropriate area, not the Nikon D80 area.

The Sigma 70-300mm f/4-5.6 DG will not autofocus with the D40 since the lens does not feature an internal focusing motor (HSM). The D40 does not have an AF motor in the body and hence it can autofocus only with lenses featuring an integrated motor (eg. Nikon AF-S lenses, Sigma HSM lenses, Tokina DX II series etc). Unfortunately you can use the said lens only in MF mode.

Do you have review turned off?

You can but with limitations;
Save me explaining,please read this http://forums.steves-digicams.com/nikon-dslr/137618-sb-25-d40-non-ttl-auto-mode.html

You think? You either did or you didn't!! How exactly do you mean backwards?

That may be the best advice :
http://nikon.com/

Hello. Make sure the write-protect switch on the SD card is in the UP (nearer to the contacts) position. Try the card in an SDHC capable reader on your computer first. Note that the SD card can only be inserted one way - make sure you're not putting it in upside-down! If the computer recognizes the presence of inserted card (whether it can read it or not), format it at FAT32. When finished, remove properly (icon in system tray) and insert into your D40 slot, WITH THE CAMERA OFF!! Turn on the D40, and if it now recognizes the SD card, FORMAT it again, in the camera. Good luck.

I fixed it!! Turn the lens to Manual mode (moving to M). Twist the very tip of the lens till it unlocks.

If you twist the lens on the end far enough on the end to the right you will find it "locks". This is what is causing the screeching sound,, it's locked and can't auto focus. Twist the very end to the left till it releases. This fixed it for me.