CMD run as Admin

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

SFC /scannow

chkdsk c: /x /r 

Network

net use * /delete /y

ipconfig /release

ipconfig /flushdns

ipconfig /renew

Firefox

about:config

full-screen-api.transition-duration.enter = 0 0

full-screen-api.transition-duration.exit = 0 0

ui.key.menuAccessKeyFocuses = false

gfx.color_management.mode = 1

ISOC NTP Server

(Hebrew University of Jerusalem)

timeserver.iix.net.il

192.114.62.250