Free up some power by unplugging the CD/DVD drive for a test run.
For the past few weeks I have been experiencing issues with my secondary hard drive becoming inacessible from windows requiring me to either scan for harddware changes and have the drive be detected or reboot the pc. These problems began occuring after I installed a new harddrive. At first I had a problem with my second harddrive spinning down during use so I sent it back believing the harddrive to be faulty. The when I got the replacement I began having the same problem but with another harddrive (not the replacment one). I tried rearranging the cables and when I plugged my windows drive in using the sata power cable that the failing drive was plugged into I began getting bluescreens. I assume this means the issue is with the PSU but I would like to be sure before i have to buy a new psu or hdd.