Need to replace a harddrive

i have a 1.5tb Seagate barracuda 32mb cache 7200rpm (im reading the box don't know more exact than that)

i bought it because my old hard drive windows went kaput, and i NEEDED to get that working again right away. i went to best buy, and that was the best thing i saw. and it was also cheaper than others like it.

it worked fine for a while but than it went to hell.



im assuming that its got a bit of fight left in it, but i need a new hard drive fast.

i would like something reliable and as cheap that you can get.
it also needs to be sata 1 compatible... (i think thats what its called) i have jumpers (i think thats what they are called) but i read that a Samsung 1.5tb (i was planing to get) wasn't and you had to have a sata 2 compatible thing to switch it to sata 1

at this point i don't really care if its 1.5tb or not but i should be 1tb, unless those are also unreliable.

for a while everything was fine, than the computer turned off and wouldn't start up, apparently the hard drive just stopped working for a bit (my motherboard didn't recognize it) than it got re recognized. my usb harddrive is in the 30mbs range and my other inturnal that is 4 years old about is in the 50 range, but that hit a max of 2.8.

all in all i just cant trust it.

but ill try, how do i make sure that DMA is working on it? ill post more screenshots as they are needed.

anyone? before i can send it away for a replacement i need a new hard drive.

1.5tb, 1tb is doesn't really matter, i just need something that i can trust.
something that i can set it to work at 1.5gbps hardware wise, not software.

to my understanding the samsung 1.5tb drive is the best one, but it is software 1.5gbps not a hardware setting, so i would need a computer with 3.0gbps to set it to 1.5 and that is something i don't have.

and every other thing im looking at is talking about a close to 50% if not higher fail rate.