How do i fix the knock against when the computer will not start up?

How do i fix the knock against when the computer will not start up?

You could probably fix it if you know enough roughly computer hardware and repair. But you don't, so take it to a repair shop.



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what do u show is the ram broken or what obligation more info
if you replaced ram within computer you may have replaced it beside the kind thats not compatable near that machine.put the inspired ram stern in it later go to crucial.com and consent to it scan the computer
Locate the manual (if possible) or Item List for your computer to find out the type, speed, and maximum storage of RAM you are competent to install.



If you do not have the information, pilfer the RAM chips (in an anti-static bag) to a reputable computer store and see if they can at least contest the memory you have.



Good luck.
Take your push to your vet, and get him fixed.