New monitor now sound won't work. i probably hooked it up wrong

how old is the computer. i prosome it's a desktop if 3-5 years .clean it with caned air.in many cases dust in wrong places can be fatal.and the videocard what is the condition of that.try 1.caned air do not shake the can 2.replace the videocard.

check your alternator check battery see if battery is charging.

Make sure the remote wire is hooked up. You can run a small wire from the power terminal to the remote terminal. If it powers up, then you have a remote wire problem. You can run a remote wire from the blue power antennae wire of the deck.

It could be a couple of things. If this monitor is hooked up to a computer, it could be a bad video card. A video card is easily fixed on a desktop, if you're using a laptop you're probably out of luck.

If it's hooked up to a DVD player, check that the cord to the monitor is hooked up properly (make sure the connection goes from the "Video Out" on the player to the "Video In" on the monitor and that all connections are tight, not barely hanging on). If that doesn't work, try a new cable.
This is probably insulting, but also make sure that the monitor is set to the right channel if it's multichannel. For example, if your DVD player is hooked up to HDMI 2, make sure the monitor is set to use HDMI 2 for signal.

If none of these work, it's time to find a tech-happy friend that can inspect everything visually. Hope that helps!

it probley shorted out the brain box

Sounds like symptoms that the monitor needed to be degaussed (pronounced "Dee' Gowsed"),
and, since most modern (conventional CRT) monitors will degauss themselves upon power-up,
it looks like your restart addressed the problem.

Usually, a CRT that need to be degaussed will develop blurring at the edges first, but its possible
that the monitor was affected by stray magnetic field(s) over time, and failed to successfully
degauss at initial startup (the degaussing circuit won't necessarily succeed the first time if a large magnetic field has built up).

Here's your wikipedia entry on the concept:
http://en.wikipedia.org/wiki/Degaussing

Here's a how-to, in case you want to (or end up needing to) do it manually:
pcsupport.about.com/od/fixtheproblem/ht/degauss.htm

It looks like a .PDF service manual may be available free here:
http://fileshare.eshop.bg/downloadsm/30014/PROVIEW_PROVIEW%20786N.html

Sounds like the trippers are worn down:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

Buy new trippers and new clock motor and timer will probably last another 11 years.

I would go ahead and boot into safe mode where you say it does work and then take a look. See how it detected it...ie look in device manager and see if it picked it up by it's true brand/type etc. Check the settings both of the display and on the envision itself. Check the resolution selection. It's probably picking it up as a lower res. but when it boots into reg windows may be trying to run at full res and perhaps that's what it won't do. Check to see what driver it's using. It may need the specific driver from envision and not the generic driver. It could also be a bad pin on the envision itself.

If you have another computer you can hook it up to, do that to make sure the envision is working. That way you can deduce which is the problem, the monitor or the setup in your laptop.

Sound like both. But the amp is fried now. It is fixable you have to replace the transistors that is attached to the heatsink. Its a job and a half and need soldering skills.
Parts are just a few bucks on line. What you need to do is open up the amp and disasemble the whole thing. Take the motherboard off completly and look at the transistors for the part number. find the part number and go to this website for a cross-refference fot an NTE part number. http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm. Once located the NTE part number. Go to http://parts-express.com/ and search the NTE part number in the search box. Hope this helps.

Should be because of the cord, give a call to Fisherprice support and check it immediately.