Dear VARN_03,
I'm Dyari. Thanks for reaching out. I will be happy to assist you in this regard.
Computer performance mostly depends on the speed and architecture of its processor (CPU), Memory (RAM), Hard disk speed.
Kindly click on Start > Type system Information and take a screenshot > post it back.
However, you can try these tips to improve PC performance in Windows:
https://support.microsoft.com/en-us/windows/tip...
Also, try these steps to overcome black screen issue:
https://support.microsoft.com/en-us/sbs/windows...
As well as this non Microsoft link:
https://www.groovypost.com/howto/fix-black-scre...
Please let me know if you need further assistance and keep me updated.
Stay safe
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Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.