Agree with essenbe, your CPU temps are too high, especially if you just re-applied the thermal paste.
Your complete 'System Specs' will help us to further analyze your problems.
IntelŪ Core™ i5-760 Processor
Tcase is 72.7°C, add 5°C for individual CPU core temp max of 77.7°C. Even with the stock Intel CPU cooler you should be at max in the low 60's.
DAEMON tools is known to cause issues, you should un-install it for testing.
Run memtest86+ for a minimum on 7 full passes with all RAM cards installed, best to run overnight.
Stop the test if you get any errors.
RAM - Test with Memtest86+
If you get any errors follow the steps in the tutorial linked above.
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
Check your CPU core temperatures, this will give us info and help with diagnostics.
Use Real Temp
, to check the CPU temps when at idle, under load and/or testing.
Let us know the minimum and maximum temps you get.