Viewsonic VE175b Monitor Powers Up Doesn't Display Windows OS
I recently purchased a used Compaq PC (D51C/P2.4/40/k512mb—Windows XP Professional with 17” Flat Panel View Sonic VGA LCD Monitor VE175B) The first time I started the computer the monitor powered up but stayed dark and didn't display the Windows OS. After I turned the monitor on and off it worked and displayed the Windows OS. Shortly after that I connected the computer to the Dell monitor from my other computer and the internet and did some Windows updates, and installed Trend Micro Internet Security Pro. Since then, the Viewsonic VE175b hasn't worked. The monitor powers up but stays dark. You can hear all the sounds of the OS loading up but you can't see it on the monitor. I've since gotten another used VE175b which absolutely works but when I connect it to the Compaq PC same problem. If however I connect the Compaq to my Dell monitor it works. Any help would be appreciated!!!
Re: Viewsonic VE175b Monitor Powers Up Doesn't Display...
Hi; I had the same problem. I know that sometimes devices require you to perform some type of '10-30 second' "hold" of one or some of its buttons in order to 'reset' the device, so to speak. So, having said that, try this:
1) Turn your monitor off (no green light) but leave it plugged in. 2) Leave it off for about 10 seconds. 3) Hold the  button on your monitor (the one to the immediate LEFT of your monitor's POWER button). 4) While holding the  button, now press and HOLD your POWER button. 5) Wait for your image to appear and STAY onscreen for about 5 seconds, then release both buttons. 6) Your monitor should retain its onscreen image.
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This monitor should be compatible with Windows 7. Just plug the monitor to your computer and let Windows automaticaly install the driver for it. No need to install the driver from the cd that came with the monitor.
That issue sounds familiar. Some DELL displays have exactly the same problem, and, for some reason, the model of your display reminders me the 172Fbp model that I'm talking about.
I believe the problem that you are having with your display is caused by a short circuit inside the display, as the power supply detects the short circuit, it stops working. You may need to get a technician to have your display repaired.
In Safe Mode, your monitor will not be listed as it is using a generic device driver for basic display. Go into your video settings and reset it to the lowest resolution available. Reboot the computer into Vista again and your display should be working. If you check Device Manager now, you should see your monitor listed. If it isn't, you will need to load the Vista drivers for it. You can then modify your display settings to suit your preferences.
Do you live on the second storey or higher? Couldn't resist. =)
It will probably be the capacitors on the main powerboard inside the monitor. Its a common fault with these and is easy to get repaired.
Unless you have fairly good electronics knowledge though you are best to take it to your local TV repair shop. The voltage inside reaches points far higher then even what you have in the wall sockets of your home.
The repair should not be expensive in any case. Call around and get a few quotes, also check who will service an LCD in your area, some will some wont.