Windows failed to start?

Okay so i got spyware today on my pc. Then i downloaded a program that found the spyware and said it would erase it. But it said it had to restart the computer to completely remove the spyware. I restarted my computer and its says "windows failed to start. a recent hardware or software change might be the cause." I tried windows memory diagnostic, doesnt work. I tried all the options of starting it, such as safe mode, doesnt work. and i dont have a windows installation disc. I dont know what to do.
this probably isnt gonna help but the file is " CI.dll" and the status is "0xc0000098" and it says windows failed to load because a required file is missing or corrupt.

how do you fix your slow computer and internet? it wasnt slow like that 2 days ago.. Cleaning the desktop and stuff doesnt work, what should i do?

Yeah, its asks about my realteck audio software and i know that i want to say yes as it was on my pc before, but theres no way to move the cursor and i have tried moving un plugging the mouse and keyboard but this doesnt work.