Any help with this please.

Booting into windows monitors comes on for a few seconds them you lose the display - if you them switch on and off a few times it come back on--

when on - the screen is the correct resolution and refresh rate correct.

thank you in inadvance

You should contact the manufactuer because it sounds like it may be a faulty lcd.

Thanks nizzy

But £80 or £125 including packing for Nec to collect and check out the monitor and then they will want a price to replace the faulty parts - does discourage you from making contact.

You should contact the manufactuer because it sounds like it may be a faulty lcd.

Do you have another computer you can test the displays on to make sure its not the graphics card?

Any help with this please.

Booting into windows monitors comes on for a few seconds them you lose the display - if you them switch on and off a few times it come back on--

when on - the screen is the correct resolution and refresh rate correct.

thank you in inadvance

Sound like you have a blacklight problem, where one of the two sets of light a burned or may have a cold joint.