#pc problem

hi i just bought an MSI GTX 750 Ti for my HP Pro 3300 Microtower PC but when I install it there is just the HP logo and 3 beeps and after that my monitor turns into a black screen with a blinking underscore. I don't know what to do now. The GTX 750 Ti doesn't t need any extra power.

My gpu is lagging after cleaning and l tried benchmarking it was 5 fps - 15fps , l tried after msi afterburner and it didn't work l tried some games like jump force , Dragon ball , and Garry mod Jump force was 5 - 10 fps Dragon Ball Xenoverse 2 10 - 15 fps Garry mod 30 - 40 fps And l...

So I was mid game and my pc suddenly turned off i thought the wire moved so the power got cut off I tired to check but the GPu white light was on so I tired to turn it on again but all the rgbs showed for 1 seconds and everything turned off again

Hi, recently i got out my old pc and turned it on. but it isn't beeping it's only spinning fans up and nothing else. i replaced CPU but that didn't worked out. any ideas how to fix that ??? i tried almost everything changing bios battery or resetting jumper nothing worked out

hello. this has been a massive pain for awhile and i have just felt so annoyed and lost on this. it all started with my browsers randomly closing. no crash or error just closing. then it became discord. then it became random applications. then it became games. i tried and tried to fix it but...