So , i was just taking out my 750ti , tried to clean it up , i opened the screws to see the thermal paste had worn out , i didnt replace it i just let it be . Though when opening the 750ti i had to exert extra force since it was stuck on the io panel . I screwed back the gpu and put it back but when i started my rig the monitor wont display anything , can somebody help ? I took out my ram stick , cleaned it , retried putting back my gpu in the pcie slot but to no avail it wont display anything . Everything was functioning , led was on , fan was spinning . I tried to connect my monitor using the vga cable straight to my motherboard but still no display ((( i was just playing some games just now . Im running 750ti , 2gb ram pentium g3250 , msi h81m-p33 and an atx 550w psu .