Windows 10: Input not Supported on acer monitor after booting into safe mode

so i just wanted to remove some files but i couldn't because they were showing its opened in an other program so i thought to go into safe mode and simply delete them but when i booted into safe mode i saw the windows logo and spinning circles for a second and after then my screen went black and my monitor was displaying input not supported i tried restarting my pc several times still it failed also I tried everything to go into startup repair thing like tried pressing F8 key, tried pressing shift, pressing the power button several times but none of those worked what should i do now

:)

 

Monitor - No Input Signal

So you are suggesting that in the event this cable goes for a six, I try out the HDMI port? Seems quite a tenable suggestion - I never thought of that!

 

Can’t go into safe mode because monitor sais input not supported

I was messing with my monitor setting and messed something up and now when i open up i see the windows logo and the spinny circles thing for a few seconds and then monitor goes black and saying input not supported. During the startup I tried going into
safe mode to change the settings to normal but it doesnt work

 

Changed monitor resolution, now monitor says "input not supported"


Thanks Dick, I now know how to enter "Safe Mode". I think I'll give Shawn's method a try to make it easier next time. The monitor works in Safe Mode but when I restarted the computer it went back to the "Input Not Supported" screen. But at least I have something to work with now. I'll keep trying different things. If you or anyone else have any suggestions, please make them.

Gary