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You will have to be more specific. 12v adaptor for what? What brand Monitor is it? Does it have a model number? Usually the model is on a large sticker on the back of the monitor near or behind the stand bracket.
The maximum resolution supported is 1280 x 1024 pixels at 65 Hz refresh rate, while the recommended resolution stands at 1024 x 768 pixels at 85 Hz. However, the maximum usable resolution is 1152 x 864 pixels at 75 Hz. Maximum usable resolution signifies the maximum resolution supported by a monitor at a refresh rate of 75 Hz or better. Though 85 Hz is an ideal refresh rate, 75 Hz is the lower limit. Any refresh rate, lower than 75 Hz, will give a flickered output and can cause some serious eye damage after prolonged usage...i hope this helps.
I would look on ebay if it has a special plug for under 20 dollars.
Most monitors use the same plug cable as a computer though, so i have rarely run into that problem. Lots of old computer plugs around.
Check your local computer shop. Take the monitor in with you. At my shop we had a whole box of them from dead monitors / laptops. most of which are 19V.
If you want new, i believe Targus made a multi end power adaptor
You can use the VGA cable which has 15 pins at both ends. For sound, you will need mini stereo phone plug at both ends.
You will have to use the combo key Fn and either F5, 6, or 7 to select the internal, external, both.
Make sure to set the video resolution to the native resolution of this TV otherwise you will get 'Format nor supported' on the screen.
Goto - Control Panel - System - Device Manager - Network Adaptors. It will list any network device installed. If its listed then Right click the wireless device then click properties.This will then tell you if it is working properly and if the driver needs updating. Also it will tell you if the device has been disabled or not,if so just enable it
Replacing a backlight is better left to the experts of experts - it is very, very, very specialized. On these models, a dim screen can also be a dead inverter - I'd try replacing that first. If replacing the inverter doesn't solve it, then just replace the screen. Don't even think about replacing the tube yourself.
This is the REAL TIME CLOCK power supply inside your laptop.It maintains the system configuration and clock/calendar. Do not try to replace this yourself unless you are experienced,you could lose everything on the system and worse still these batteries can explode!! Connect the AC adaptor and let it charge for at least 24hrs. Press F2 to enter the bios. Set correct time and date If it Persists take it to a dealer to be replaced