Hii, wel i got a system which is pentium3 in these system there are few files in the hard drive & i want to back up those files due to some reason i could not back up my files because my computer does not recognise or detect my flash drive & even am not sure whether my usb port is corrupt or not. so what i thought is since i got another computer which is pentium4 i thought is taking that hard drive of pentium3 system & booting into the pentium4 system but that was also worthless because the system was not booting up it was unable to recognise my hdd so i tried to perform a hard reset that didnt worked out then i reseated the hdd cable & sata cable that also didnt worked, again & again my system was restarting by itself then reseated the RAM... no good, so i disabled automatic restart.... didnt worked out, performed last known good confiuration nor even that worked & later at one point it given me stop error message 0x0000007b which as far as my knowledge i believe it is a software error since the system was not booting up i thought i would have to format the hard drive i got totally confused over here as i want to back up the files & it is not working any good for me, then later i thought of booting the system in safe mode that also didnt worked, i got pissed of later on that given up my hope started beliveing i cant back up my files, so i took out the hard drive & connected to the same pentium3 system & all of sudden u know what it is working fine now i got my hope back & i belive that i can still back up my files please please help me in this to back up the files... please let me know the reason why the hdd was not recognised in the pentium4 machine & if you have any way to fix this please let me know or email me the troubleshooting steps... i am waiting for your reply