Viewsonic v150 doesn't stay on

CPU may not be able to handle it. Don't recommend it.

Very typical of View Sonic. Sounds like a back backlight or inverter. I would go to www.viewsonic.com and open up a RMA. Most view sonic screens have a 3 year warranty. They will repair at no cost ..(if it is within that period) There is a date code on the back of the screen that will help you validate the above information.

It can be as simple as bad DC filter caps (leaking/bulging tops), that will be the first thing to look for, it can be more serious problem in the inverter circuits or bad CCFL assemblies.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VG2021/

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Bad caps in the power supply, common problems. See examples here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20V912B/

Hold the Vol+ Vol- buttons down and turn on the power switch in the back of the unit.
The screen should turn blue and some square in the middle of it.
The noisy square is actually the bios being reset.
Once the unit turns itself off, you can turn it back as usual.
Note: Some of these units require a 3 button reset.
In that case hold Vol+ Vol- and Menu at the same time while you turn the power switch on in the back of the set.
I hope it was helpful.

Bad capcitor in the psu would cause this to squel and even pop so have it looked at you be glad you did.

THIS IS FOR XP SP2 IF YOU ARE USING VISTA, you may have to modify some of this.

First, ensure that RDP (remote desktop protocol) is enabled on your PC AND ALLOWED in your firewall program (probably the quickest way to check if it is a firewall issue is to temp turn off your firewall and try to connect to your pc with the airpanel)

Also, your user name on the PC you are trying to reach has to have a password for RDP (and thus the Airpanel) to work. if you do not have to type in a password to log in to your user, change that under
control panel>users

if this doesnot work, try checking the ip address of the PC you want to connect to (run>cmd ipconfig /all )
and manually set up the ip and login info on the airpanel. If you had it working before and it doen not work now (or at any point in the future after getting the settings right) un plug it from the wall and pull the battery for a min or so then phug it back in and turn it on. resets most connection issues I've had (when I know the settings are right)
also google 'rdp hack' to make it more useful

Is it an HP or a Viewsonic screen ?

Either way, looks like a power supply problem to me, some Viewsonic screens are known to have a problem with their inner power supply card, If your screen is still under warranty I suggest you don't lose time analysing the problem and just make them come and fix/replace it

Per the first hit on Google for 'viewsonic fades white', http://forums.worldofwarcraft.com/thread.html;jsessionid=A68BB7FE4AF6EC93EB730E8588C865A2?topicId=4064461903&sid=1
(which you should go on and read in another tab,) you need to contact Viewsonic about an inverter board (for the CCFL backlight) or switching your backlight to LED while spoofing the INVERTER_OK signal to keep the display from giving up as it does.

So...this should be a hint that you should respect others' time (or be moved to increase usability) better by searching for cures in similar Viewsonic monitors, and of course checking the obvious search terms.  Viewsonic evidently has a nifty knowledge base available for all on the web, so that one would be a nifty surprise.