PC doesn't detect the monitor.

[Leo Cheung]

So I ordered some Ram (Corsair Vengeance 8GB DDR3) and I bought a SATA cable for the HDD I am to buy soon (I thought I'd attach the SATA cable now so I wouldn't have to go through the trouble of removing my graphics card to reach my sata cables to install the HDD)

I opened up PC, removed my previous ram and installed both of them.
I put everything back together and the PC doesn't detect the monitor, at this point I think I've probably just not installed it on properly and it's loose so I try again. It still doesn't work.

I've tried reinstalling the graphics card, I've tried using my old ram sticks, I've tried booting up the PC with no ram sticks but I heard no beeps, I've tried connecting the monitor to my laptop and it worked, I've tried both HDMI and DVI.
At this point I'm just completely stumped, I've no idea what to do next.
Help?

Foxconn A88GMX
Nvidia 670 factory OC
AMD Phenom X4 II 965 Quad Core 3.4 ghz
Rendition 4GB ram (Corsair 8GB Vengeance)

Samsung SyncMaster S22B300

 

[coastie65]

Yu didn't say what monitor you had, but I am assuming that for the Monitor, you are showing PnP for the monitor in the device manager. If this is the case, then you need to instal the Monitor drivers. This is either done from a disk, or the Manufacture's site. The PnP thing is just a generic thing.

 

[Leo Cheung]

I updated my post.
I don't think you understood me, the PC was working fine before all this, it was only when I tried to upgrade my ram that it started to not work.