Hi, welcome to TSF.
Yes, it could be a bad HDD.
Also - it sounds like your computer might be underpowered.
Please post the system specifications, including PSU.
You can use this script to obtain the specs:
Download "
TSFdemo1" file, unpack and run it.
In "Tech Support Forum Hardware Reader" >> click "Copy to clipboard" >> paste the info in your next post.
The power supply info can be found on a label inside the case.