Monitor out of range

Hi, i wasnt paying attention & was in START - RUN & pressed ok with configure in the box, now when i switch on my pc a box appears saying monitor out of range. anyone got any ideas as to how to fix the problem.
im new with pcs so if u could make it as easy as possible. thanks
 
Hello joed, and welcome to TechSpot :wave: ! First, does your computer show a boot screen and then go out of range, or show nothing...also make sure your monitor is plugged in correctly with the pins all straight.
 
yes its got a boot screen, we checked the connection & its ok

pc & window seem to be working as normal
 
Right before you normally see the Windows splash screen, press F8 (multiple times is fine), and it will bring up a menu of a bunch of boot options. Choose VGA mode. Once you get to the desktop, change your resolution/refresh rate to something that works.
 
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