DP45SG won't POST / BOOT

it is possible the freezer went into a defrost cycle leave it plugged in and in about 20 minutes it may come back on, or you may have a dead plugin . plug something else into the plug to make it is working

check the cable for the bad monitor at BOTH ends. Some cables detach from BOTH ends, and if one side is lose, then you will get weird stuff happening....odd colors, lines etc.

Otherwise...it would seem to be a bad cable....which would **** if it is one of those that does NOT detach from both ends.....since you can't just go get another monitor cable.

Tallon41

check the inlet valve.

Mine did that before too! I just took the ink cartridge out and kinda wiggled it around a bit then replaced the cartridge and it worked! If that doesn't fix it I'd post the make and model of your computer so someone knowledgable could better help ya! Have a great day hope u get it goin!

it is because your nvidia card was broken, it makes the windows won't boot up, try to clean up your nvdia card (yellow circuit which will connect to the pci of the mother board) using a pencil eraser

i suggest you to change your nvdia card with a new one

it is very bad for a computer of any sort to sit for months even weeks at a time its just like a car engine sitting in the rain for that period of time and of course it will not work you may be having motherboard issues and you need to have someone that knows what their doing look at it for you! i hope that this helps!

Try changing the filter; our refrigerator did the same thing.

Is it a corded or cordless keyboard? And what is the make and model?

Try a few things for me OK? From what you typed, turned on the psu "the toggle switch on the psu", pc seemed to be starting up. I need you to keep the toggle switch on the power supply in the on position. Press and hold the start button on the PC case to shut it down. Give it a few seconds & power up by pressing the power switch on the case. Notice a differance? Next, unplug everything connected to the pc expect the monitor, mouse & keyboard. Try to boot. Still no? Remove the side of the case exposing the board. Turn the psu off by flipping the toggle switch on the psu, wait till the green light on the board goes out. Grab the Mb ( I know it's tight in there) and see if you can move the board in any direction. Not loose? Re-check all data & power connections for a solid connect. Re-check your case to Mb connections. Also check the PSU, there is a red slide switch it should be set to 115v. Post your findings..
map

this does not sound normal. if he serviced it just a month ago is it under warranty? it is possable that the charge roller is not making good contact. or the mag roller is not turning. have the tech do a better job of explaining what fixes it.make sure the dev unit is engageing fully.