I'd second Jaga on Macrium - it's legitimate and widely used. If you want a "lean and clean" disk imaging utility, then I would suggest you take a look at
Drive Snapshot - it installs no services, just a driver (and that only temporarily). It is commercial, but the trial download will provide 30-day backup and unlimited restore functionality. It also doesn't fill PrimoCache with backup data, unlike some other software.
Looking at your hardware Qweqwe321, the one thing that sticks out is that you are using 2 different types (and likely different specs) of RAM which could result in problems for memory intensive applications (like PrimoCache). You may wish to run a memory test benchmark to verify this - something like
Memtest86+ or the "Large" Torture Test option of
Prime95 (the latter also acts as a good test of your CPU and cooling).
PrimoCache itself works via a driver - rxfcv.sys (its predecessor - FancyCache - did run as a service). This shouldn't conflict with any widely used chipset - Windows would almost certainly have reported a driver name if it had.
(edit: Changed link to point to the GPLed Memtest86+ rather than the original, and now commercial, Memtest86 - either should do the job but the commercial version free download seems to be more feature-restricted. Apologies for any confusion).