HELP !! PS2 black screen then go back to memory card screen

[Spy_007z]

My NTSC V3 PS2 was moded with Origa chip, lately, I ordered a messiah 2 chip so I think may be I can solder all the wires in advance before my M2 chip comes.

So, I soldered all the bios point and all points looks good, Origa chip still work because I can still boot all my games.

Another day, I got a Multi-meter from my friend and think may be it is good idea to check the points to make sure they are good.

So with OHMS setting RX1, I checked all my points and looks good.

I put my PS2 back together and try to boot up the GameShark.

The PS2 start, go black screen and usually after a few second, the PS2 logo will comes up then gameshark boots.

However this is not the case, instead, it goes to the memory card screen (you know white backgroud with a memory card and a blue CD besides it).

I don't know what happened, all I did was checking all points with multi-meter.

I also tried to boot with out memory card or controller... but still no go.

Help please.... help......!!!

[Spy_007z]

any guess?