Frequent Crashing/Freezing

Hello,

Over the last week or so my PC has been crashing, restarting and freezing regularly and sometimes will get stuck at the windows logo on start up, mostly while playing League of Legends but it has happens while browsing the internet and such. I had the BSOD yesterday but my computer instantly restarted. I have tried a couple things to try and resolve this issue but none have worked so far:

- Disk Checked both of my hard-drives (external and internal)
- Scan with my anti virus software and used nortan power eraser

I have some knowledge of computers but this is out of my comfort zone any help and/or advice would be much appreciated.

Thanks.

I have my pc set for the kernel memory dump, but the same error message keeps occurring after i click the grab all button.

Could not find the C:\windows\eventapp.txt

I think i may have made a error somewhere, everywhere other than the 'host' button are bringing up a similar error to the one mentioned above.