Good day!

Im a newbie in assembling PC.
problem is when i finish assembling PC my 500gb external hard drive cant detect it, but in other PC and in my laptop it is working properly same with my MP4 player...
All brand new Flash drive working good and other output device but if the device is quite old its not working.

PC specs:
Windows 7 ultimate 64 bit
intel core 2 quad q8400 2.66ghz
asrock g41m-s3 motherboard
2pcs 4gb ddr3 (8192RAM)
display approx total memory : 3056

i installed the driver...

tnx in advance..

pls. excuse my english grammar i hope you guys can understand..
i appreciate the correction..