Gateway DX 4870 UR 348 Black screen

[Comoraceman]

Newbie here so go easy ! From reading posts here and realizing my purchasing a Gateway less than a year ago was in need of up grades. I figured I would start with Ram, as I could not read the info on the card so I removed it to retrieve the info. The in side of the case was fairly dusty so having it powered off I air dusted it and it hasn't booted since !!
I only get a brief blip of "no input signal from DVI and right back to black screen ! Otherthan OSC lockout on my HP flat screen monitor of which was another wasted goose chase that produced no results. I can get into the BIOS utility but not knowing what I'm looking at or doing nets me nothing ! PLEASE HELP It's a Gateway DX 4870 UR 348 DT.GDDAA.16 , 2nd Gen Intel I core i32130 processor , 4GBDDR3 mem 4096mb 3.40GHz 500GBHDD , 7200SATA , Multi Inone Digital Media Card Reader , Windows 8.
I do realize I need to upgrade the power supply, Ram and poss the SSD but the only thing good about this machine was the price !! Now I see why....

 

[tiny voices]

You do not need to upgrade the PSU for adding RAM and an SSD. Only if you want to add a GPU.

 

[Comoraceman]

Oh I understand that. I was just reading some of the reviews and posts about the Gateway desktops. And I realize this unit is probably still under warrantee but I'm still waiting on a response from Gateway support !! I actually took the hard drive out of my HP desktop and have it piggy backed into my Gateway as an additional drive. At least I think its working that way.
At any rate I was going to get some additional ram cards installed as well as a larger power supply ! Unfortunately I had just replaced the power supply in my HP with the 500w unit and then shortly there after it crashed....

 

[tiny voices]

You probably bought a junk unit. only buy a PSU from Antec, XFX, Seasonic to ensure quality.

I still don't see why you are replacing the PSU for no reason though.

 

[Comoraceman]

I'm assuming the PSU is the power supply and not what I'm looking to replace at this point !! OK It's only what was recommended by this site t another gateway purchaser for a future upgrade, thats why I mentioned it. Now hopefully someone will respond to the real question I had as to whether I have a motherboard/graphics card problem here because they are integrated into the mother board ! And I have a black screen, no signal to monitor. And I tried another monitor, same issue.

 

[tiny voices]

The PSU is the power supply, yes. And you only need to upgrade it IF you add a dedicated graphics card.

As far as your issue is concerned, does the PC boot up fine, but just no picture?

OR does the computer only boot for a second and then shut down?

I would first remove the RAM and reinstall it firmly. It should take some force to get the sticks properly seated. They only go in one way also.

 

[Comoraceman]

If booting up is powering up but with no response to the monitor doing anything , yes. It will turn on and stay that way indefinitely ! I tried moving the ram to a different spot as when I tried (per the forum) to make sure it was firmly seated, I broke the upper tab off that releases the ram card. And I assume those release tabs come with the motherboard.
Anyway I've tried it in another slot as well as firmly nstalling into the original slot all ith no results. 🙁 And I do know that I was putting them in correctly. I have also tried another monitor that got the same message about no input and the signal.

 

[Comoraceman]

A lot of answers and help in here ! Thanks everyone for everything but what I asked, otherthan some comment about me buying junk ! Well that junk came from Gateway and they still aren't contacting me from support, kinda like this place. More un answered tech questions in here than answered !!