I have a Precision 3591 and am having problems connecting it to external monitor. I have a power adapter that's 90 watts but the original was 130 watts. Would that keep it from connecting? I can't see anything but cracked lines on my display so can't easily switch display modes. I've tried every "start nararator /FN / windows /P button" trick I can find in these forums and on the support website. The one thing i did see on the monitor one time was a warning saying the power adapter didn't give out enough juice and performance could be effected. Is that more than likely my problem? Thank you for your advice