Please fill in your system specs, this will help us with the analysis.
Speccy Free System information Utility
Run the SFC /SCANNOW Command two more times with re-boots after each run, even if the next run says it didn't find anything.
One RAM error is too much.
How many RAM cards do you have installed?
Run memtest86+ with one RAM card at a time, as per the tutorial.
You need to find out if one card is bad or if you have a bad mobo slot.
If you get any errors you can stop the test.
Can you
download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs.
For posting the information , enter 'Snipping tool' in the Start button > Search box, hit enter. Select the area you want to post and save to a convenient place.
How to Post a Screenshot in Seven Forums
Go to your BIOS and tell us what the CPU, RAM and the CPU integrated memory controller voltages are.
You don't need to run Prime95 or Driver Verifier until the RAM issue is fixed.
You are having a lot of plug n play device errors, what do you have plugged into your USB ports?
Check for any new drivers:
HP Download drivers and software