Monitor stop working after memory and usb 2.0 upgrade

[kite3]

Hello,
Thanks, After I installed a usb 2.0 card and triple my memory size. my monitor after about an hour stop working. I tried everything (or almost everything that I know). I reseat the battery on the motherboarb, disconnect and reconnect almost every wire, use different monitors` that I know works, still their is no signal going to my monitor when I boot.Your help is greatly appreciated,thanks. specs: windows xp home edition

 

[vimal992]

the ram that u have installed is the problem-1>it might not be a good one(brand)
or 2>try changing the ram sockets,,place the ram properly,,stifly into the slot...

 

[devt333]

search for posts in hardware section, your problem is called "no video" and or "no post".