Nikon D60 Screen failure when SD Card inserted

There is a tiny slider switch on the memory card, move it to the unlock position.

Try this link :
ALL IN 1 MULTI MEMORY CARD USB READER SD SDHC MINI MICRO M2 MMC XD CF

The SD card maybe faulty, try a different SD card.

I cant detect my pics in my laptop from the sd cars. But I can see in my camera when I insert the same sd card. Is there any problem with sd card or any virus effected? How to upgrade the sd card. please help me out.

Make sure the camera is off before inserting the card. Can your camera use the size card you have or does it have too many GB's? Is the slide switch on the side of the card in the unlocked position?

turn on the camera and find the reset function in the menu. reset it. then find the format function and reformat the memory card

It could be one of two problems. The most likely is that the card reader you are using cannot read SDHC cards, of which all 4GB and larger cards are. Try using the camera's cable to download to your computer directly to the USB port. I bet you'll find that it works that way. The other problem could be (but not likely) that you are shooting on the RAW file format, instead of the jpeg file format. Most software cannot recognize RAW files, but jpeg is pretty universal.

Check your SD card, there may be a piece of it missing. Did the same to my camera and looking into the card holder, there was a piece of SD card lying at th bottom! (I used a needle to dislodge it!)

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.