Title. Bought a Gamer Supreme Cyberpower PC from Best Buy a little over a month ago and its just been crash or lockup black screen for the last 2 weeks or so. Playing a game? Screen crashes and locks up and the image becomes blurry and i need to restart. Idle watching Youtube or looking at a site on google? Screen just sometimes goes black and unresponsive but the tower lights and keyboard stay on and i need to restart it for it to work again. The crashes and lockups are very random but the pc doesnt stay on for more then 2 hours before a lockup crash or black screen occur. I purchased the PC prior to this current one and it was blue screening right out of the box so i took it back to Best Buy for a refund and had them ship out a different one of the same type a couple weeks later.

This time it lasted just long enough for my Best Buy 15 day refund to run out before the crashes reared their ugly head again. No blue screens this time at the very least but this has been a absolutely frustrating experience all around. Have tried calling and emailing support all week long to no avail. PC came with an Asus RTX 3070 and ive tried re-seatting it multiple times, reseating ram, making sure all the plugs are in tight, changing my Display Port cable, reinstalling windows etc etc. Today i took the GPU out and placed my 1070 from my old PC inside and havent had a crash as of yet. I'm not tech savy but im assuming that since no crashes are occuring it either means the GPU is bad or the PSU since no issues are occuring now.

Just wondering what my options are because im at a loss of what to do. Is there any way to RMA the card through Asus because ive read the horror stories on here about shipping stuff back to Cyberpower or do i just go through them anyway? Also any idea if it is indeed a GPU problem or is it possibly the PSU?