Why isn't my monitor and display adapters on my device manager?

I've tried installing the monitor driver, but I won't work. The monitor still won't show up in the Device Manager. Because of this I can't change my screen resolution or anything. Do you guy have any ideas of what I should do? Should I disconnect and...

I just took out the AGP video card and wanted to use the computer's original one. When I restarted the computer it recognized the resolution was low but will not adjust it. I thought I'd maybe update drivers but can't even find the display adapters to...

Ok, so I hooked both of them up, first off, if I hook up one of them with the cable that's attached to the monitor and has a blue head, I get a message when I boot my computer that says this computer has an add-in graphics card but the monitor is hooked...

I am trying to use a secondary monitor which works in safe mode and shows the XP screen booting when not in safe mode. I did some looking into it and under "display adapters" it is not showing the adapter for the Dell flat screen I am trying...

i have a nvidia geforce mx 4000, and i reformatted my computer and it will not recognize this video card. it's what i have the monitor plugged into, and when i go to desktop>properties>settings it says defualt monitor, and when i look under advanced...

I have an Inspiron 9400 32 bit vista home premium with ATI mobility radeon x1400 graphics. I installed ATI's Catalyst Control Center and my LG tv is identified. I'm using it as #1 in extended mode. But my LG tv is not listed under Monitors in Windows...

ok all you smart people i cant get my sims 2 to run because of this stupid directX 9.0c graphic adapters crap.. and ive already tried downloading it again actually like 7 times !! is there anything wrong with this >>>>> --------------...

i got a connection to convert my laptops VGA connection into HDMI to use my 32" HD widescreen as my main monitor. i couldn't get it to work for a while cause everything looked good in settings. so i fiddled with it and turns out my widescreen will...

I have ruined my two days in order to solve this problem but I couldnot.I am explaining this step by step. Problem is related with Screen Resolution and Screen Refresh Rate. My Laptop Configuration is -Gericom First Supersonic PCI E -Intel 915PM ChipSet...