Hard drive

My computer has problems with random semi lockups, where the pc is responsive, but the windows freese and become non-responding, and the windows wont load and webpages are stuck loading. I have done memtest etc and ive done every test, i now am pretty sure its the hard drives being corrupted, so i am purchasing a new one. I have my eye set on a scan samsung F1 1TB, does anyone else wanna try and suggest anything i may have done wrong? I am very technically minded and know my stuff and everything, but that could make me complacant, so help me out guys :)
:)

Can you access the smart data on the existing drive? Samsung discs are fine.

I am using the hard drives currently, they are both dodgy though, and the pc keeps trying to disc check them, but they are too corrupted to actually complete disk check.

HDD inherently knackered, or power supply buggered? You decide...

Buy a cheap multimeter and measure the voltages on your power supply.

If it is the hard disk at fault it might be worth trying Spinrite to see if it can clear up the errors on your hard disk.

I have my new hard drive installed, no errors on it, and with a new set of ram too its perfect, i am so glad i got my 2x2GB sticks same time as hard drive to give system a new lease of life.