More information about the computer would sure help. Desktop or laptop? Make and model of computer? How old is the computer? Although you've posted in the Windows 10 forum, is it a fully updated version of Win10?
In the meantime, possible issues come to mind.. To start with... Your login profile/account could be corrupted. Try logging in as a different admin user. (If you don't have a different admin login, create one even if you have to do it from Safe Mode.
Or....The screen/graphics card could be failing... Tried swapping in a known good monitor to see if it functions correctly?
Hope this helps and let us know more.
Grif
I can sign in to my pc but as soon as it gets to my desktop it starts flashing. I can open task manager and libraries but nothing on my desktop works and all of the background processes are still working.

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