LG desk top PC
Not working properly

I buy desktop PC two year ago, As i am leving abrod there is no more use of Desktop. But inthis two year period i hardly used for few monts, when i am using desktopm many problem accuring,

Since in this period three times motherbod failed and commputer not working properly.

I dont know LG will sole problem permannantly or not, I would like to replaced the my PC. because i can't aford more expence due frquently fault happening in PC.