Sorry to hear about your computer problems Adonar,sometimes windows drivers updates can cause problems with none windows software driver updates,you can always go to restore in the settings and roll back the settings to a time before when everything was working,worth a go before your pay out for a new pc.
It is also worth looking online for a replacement places like Amazon as you can see other peoples reviews and what they think of products before you buy, does not mean you have to buy it from Amazon