If you have problems with the tools, try the manual way.
For RAM, take out one stick and put in another slot. Repeat for the
other sticks if you have more than one. Same for the slots.
Make sure your hard disk is a Seagate hard disk before using the
tools.
Go to the website provided and choose the first option, which is
SeaTools Online.
Under that column, you will see Select a language. Select a
language which you are comfortable in.
You will be brought to another page. Select Drive Self Test (DST)
and File System Check. Do each of them one by one.
Make sure JavaScript is enabled before you do the tests.
Also, check the temperature of your CPU. It shouldn't be running
higher than 70 degrees. Restart your computer. When you hear it
beep once, press the Del key to enter BIOS. Navigate around and
find the temperature. Monitor it for a while.
Get Speed Fan to monitor
your CPU temperature. Don't do anything to it, just monitor.
If it gets quite high after a few hours of usage, it's time to
check your heatsink and fan. It's also cleaning up time as dust
doesn't help in airflow.
If all results are good... it may be due to motherboard... or
software corruption.