Sony PlayStation 2 (PS2) Console "post problum" Questions

...problum was that Id turn it on Id get sony entertainment then wavy line. No logon screen, so I turned it off from sorce turn it back on the sorce and then the touch sesitive in the front held it ther ...

...post pops up telling me there is a system error and I should contact Tec Support it also reads E-74, it dosn't sound like my game is spinning. No I have not fixed the problum, that is why I was told ...

memory card no data i posted to a problum about a memory card say no data when it is put in the slot and the memory is missing and no data can be loaded or saved, you said to unscrew the back and push