Yes, it's fixable but BSOD error messages address a multitude of problems.
About half the BSODs point toward RAM problems, so replacing your RAM will probably, but not necessarily, fix your problem.
If it was my personal computer, I'd try changing the RAM as a very first starting point. If that's not it, you can check the power supply next, the motherboard, then the CPU itself, in that order.
Alternatively, you can simply try re-installing Windows which will get rid of a lot of BDODs, then try further hardware testing, after the RAM.
A trick in the industry is to unseat the CPU the seat it back. Amazingly this sometimes works.
I hope that gets you started with your troubleshooting.
A lot of experience, but sadly, I have forgotten it all ;)