Inappropriate slightly but the first image made me chuckle..
"RAM memory reliability is extremely low.."
For starters RAM means Random Access Memory, so a message saying "Random Access Memory memory reliability.." is nonsense and would never be an official Microsoft error.
Secondly unless the RAM is ECC, which typically you only tend to find in servers, there is no error correction or "reliability" - if it fails Windows will just fail in various ways (file corruption, downloads failing CRC checks, bluescreens, etc), but it won't be recognised as memory faults outside of specific memory test apps that it is the cause
Regards the state of your machine - personally I wouldn't even waste my time trying to clean it, if I could get my important files off I would reformat and reinstall.