lol i think i probably fixed it........ it is weird, true, now after doing everything, i've come to a point that the lag is gone, the information inside the drive is recovered(up to a point of recently formated) and everything seems fine again, I just hope this well last, and most likely it well, here is how: First of all, it is actually because of the wire of the drive, that is why i said it's weird, if it's a wire problem how can you explain i am able to sucessfully boot but lag?? because my power supply isn't the latest, and it had just enough power source for me to plug in to different device, here is the set up, the main source was connected to a fan first, which then came out to connect to the slave drive, then the master. the master is used to boot the windows, which is the last being connected(how weird? i boot just fine) the secondary which is the maxtor(the master is a seagate) everytime things going on was the secondary, and the source for the master drive was actually came out from the secondary. i noticed it's a link problem while i see the case fan isn't even moving. -_- then i try tighten the secondary drive a bit, then i notice, when i do that the drive is moving then stop and move again......... you should know what happends next, now the fan is removed, connecting directly --secondary>master , restart, then the files in the secondary lives again. now i came to a conclusion that it's the conductivity of one or more wires in that line, but can anyone explain(the 4 lines 1 yellow 2 black middle and another red)how the 4 lines work, and how can this weird thing happen? ---secondary failed and master boots suceed every time but lagging? sorry for the long post lol.