Sony Alpha A100 shakes when I turn it on

If the battery is charged, try replacing the battery first. Also try turning on the camera with the charger plugged in. If neither helps, you will probably need to have the camera sent for repairs, but you can still try checking out the user manual for helpful information:
Sony Alpha DSLR A100 manual

With the fee that you mention the better option is to buy a new one.

ISO speed is too high, low an iso as possible go to the menu, and read your owner manual very well, and fix it.
God bless you

Before attempting to take the camera apart, make sure to refer to the user manual. It will contain diagrams and schematics for the device:
Sony Alpha DSLR A100 manual

Check your white balance when you switch to those modes.

not all memory cards fit sony alpha perhaps you have bought wrong cd.try using your sd slot

No, there isn't. It's the stabilizer shaking and making noises. Contact your local Sony service center.

card slot pin is stuck or broken

Hi! I just had the same problem with my Sony A100, when I tried two different CF cards. I was getting the same error message as reported above: "Unable to use card" then "Format?" then that format fails. Thinking the camera is broken, I checked online camera repair sites and also called Sony directly. Sony's flat rate, and that of PrecisionCamera is $228 to fix CF card failure. Then my daughter said, "the CF card in my room works fine in the camera" - and lo and behold - it does. The CF card that works is brand PQI and is marked Hi-Speed 60 2Gb. The cards that do NOT work are marked SanDisk Ultra II 1.0Gb and SanDisk 128 Mb. So my advice is, before you give up on the camera as broken, try a number of different CF cards first.

The second cause of CF failure is if someone has pushed a CF card in the wrong way. That can bend one or more of the tiny metal contact pins in the CF socket in the camera. Look carefully to see that all the pins are straight up. [I don't know how one can straighten these pins, or if the whole socket would need to be replaced...but at least you can determine the cause of the CF failure.]

Best regards - Michael

I just took mine to the camera store and the woman at the counter swapped out my lens. The camera now works and the camera shake icon is gone. Try changing the lens, this worked for me and I had the same problem.