OK heres answers to all the questions.
First of all, i did a quick restart on my system (dont know why I didnt do that first), and the clicking has stopped. Now I dont even hear a whisper, even when writing, reading, or seeking.
I dont think my PSU is a problem, I have a Fortron Source 550W PSU.
I dont have anything else connected to the line that is plugged into my HD because the Fortron has a line that ONLY has SATA power connectors on it.
It is an OEM drive from Newegg
**Note** When I ran the SpeedFan SMART test I got these results.
"Error: Spin Retry Count has reached its threshold. Current value is 91 and threshold is 97.
According to S.M.A.R.T. specifications, your hard disk is failing and needs to be immediately replaced. Backup your data as soon as possible.
Warning: Spin Retry Count reached, in the past, its threshold. Worst value is 58 and threshold is 97.
Your hard disk is now being compared to real data used to define normal values for your specific hard disk model. This way, the analysis can automatically use proper operating ranges. The images give you an idea of how each attribute is within such range. Current and raw values are shown for easier reference for experienced users. There are 1286 hard disk models in the current archive.
Attribute Current Raw Overall
Raw Read Error Rate 93 9695115 Watch
Warning: Raw Read Error Rate is below the average limits (100-119).
Spin Up Time 95 0 Very good
Start/Stop Count 100 18 Very good
Reallocated Sector Count 100 0 Very good
Seek Error Rate 32 784 21 20429 Watch
Warning: Seek Error Rate is below the average limits (60-100).
Power On Hours Count 100 18 Very good
Spin Retry Count 91 0 Watch
Warning: Spin Retry Count is below the average limits (100-100).
Power Cycle Count 100 5 Very good
Unknown attribute 187 100 0 Very good
Unknown attribute 189 100 0 Very good
Unknown attribute 190 75 421003289 Very good
Hardware ECC Recovered 66 76632754 Normal
Current Pending Sector 100 0 Very good
Offline Uncorrectable Sector Count 100 0 Very good
Ultra DMA CRC Error Rate 200 0 Very good
Write Error Rate 100 0 Very good
TA Increase Count 100 0 Very good
NOTE: not all warnings are reflected on fitness and performance overall values as relevancy is based upon the settings from the hard disk manufacturer who is the best entity deputed to define such relationships.
NOTE : your hard disk Spin Retry Count attribute current value (91) is below the normal range (100 - 100) reported for your specific hard disk model. This means that your hard disk was unable to start the motor at the first attempt and that additional retries were needed. This is not a good sign and you should keep an eye on your hard disk. "