Ok, so I ran it once, and it generated a fixlog. However, I didn’t see this at first, so attempted to press “fix” again, whereupon the program stopped working and I had to exit it using Ctrl+Alt+Delete. Is this a problem, or is it okay? Anyways, I have attached the fixlow.
What problems are you seeing now ?
In general, you mean? It seems to be working fine, maybe a bit slow when loading webpages and such, but nothing extraordinary.
You probably need to empty your temporary files… FRST did not achieve that as you stopped it
Clear Cache/Temp Files
Download TFC by OldTimer to your desktop
[*] Please double-click TFC.exe to run it. (Note: If you are running on Vista, right-click on the file and choose Run As Administrator).
[*]It will close all programs when run, so make sure you have saved all your work before you begin.
[*]Click the Start button to begin the process. Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two. Let it run uninterrupted to completion.
[*]Once it’s finished it should reboot your machine. If it does not, please manually reboot the machine yourself to ensure a complete clean.
When I tried dowloading the program you posted a link to, avast popped up, saying it had blocked an infection from that site. It was called “FileRepMalware”. I take it this is not what was supposed to happen?
tools used here are frequently detected, especially after a update
right click avast tray icon, pause shields … and try again
I have now downloaded and run it, it didn’t reboot automatically, so I did i manually. Is there anything else I should do, or is anything fine now?
How is the computer behaving ?
I would say pretty much the same as before, but maybe a tad faster. All in all I wouldn’t say there are any problems now. I just want to be sure that there aren’t any problems “beneath the surface” so to speak. But everything seems fine to me atm.
Subject to no further problems 
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Remove tools
Download and run Delfix
Select the options as shown
https://dl.dropboxusercontent.com/u/73555776/delfix.JPG
: Keep Java Updated :
WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)
If you do need to keep Java then download JavaRa
Run the programme and select Remove Java Runtime. Uninstall all versions of Java present
Once done then run it again and select Update Java runtime > Download and install Latest version
https://dl.dropboxusercontent.com/u/73555776/javara.JPG
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
CryptoPrevent install this programme to lock down and prevent crypto ransome ware
https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG
Update and run weekly to keep your system clean
Click on the link above to be taken to Unchecky.com
click the very large Download button.
click Save
Click Open folder
Right click on the Unchecky_setup and choose to Run as Administrator
Once open click the Install button.
Then click on Finish
Unchecky is now installed and will help you keep unwanted check boxes unchecked, this is a fire and forget programme 
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To learn more about how to protect yourself while on the internet read this little guide Best security practices Keep safe 
Well, everything seems to be fine then. Thanks a lot for all the help!