Monitor setting when i start using this type of monitor, i alway configure the monintor setting such as, widht, height, position, bight and contrast. but after few day, when i turn on my pc again, it's alway go to the default setting. when i test it with other computer, it's not change to default setting. Why? it have problem with brand name "DELL OptiPlex 745" with VGA 256MB PCI Express.

is this a crt monitor or a lcd monitor? if it is a lcd monitor then your problem is a bad back light power inverter board and needs to be replaced. if it is a crt monitor then check the brightness and contrast controls on the crt monitor.
also check to make sure that the display are compatible with the crt monitor as well! meaning that if the crt monitor's max resolution is 1024x768 and your video card is set to a higher setting then you will get a blank screen with a sometimes green power light, maybe flashing. be very careful though because may also damage the crt monitor. also check your video card setting to make sure it is at 50 hz or 60 hz some crt monitors don't like the higher vertical refresh rate.
one last thing is the age of the crt monitor, it may be on its last leg of life. when i worked at a monitor repair center a few moons ago there was a life expectancy of maybe 30,000 hours(?) on a crt(note: it's been awhile so please don't quote me on this life expectancy!)
you may get eye strain with higher than 60hz range.

Find the TV you want on line and read the dimensions from the web.
There is no standard size.

The ideal settings for your Acer X193W LCD monitor will depend on your personal preferences and the specific tasks you are using the monitor for. However, there are some general guidelines you can follow to ensure that the monitor is set up and configured optimally.
Here are some recommendations for setting up your Acer X193W LCD monitor:

1. Adjust the position and orientation of the monitor to ensure that it is comfortable and easy to view. You may need to adjust the height and angle of the monitor, as well as the distance between your eyes and the screen, to find the most comfortable and ergonomic viewing position.
2. Set the resolution of the monitor to the highest supported resolution. This will provide the sharpest and most detailed image, and will ensure that the monitor is able to display high-resolution graphics and text clearly.
3. Adjust the brightness and contrast settings to a comfortable level. The ideal brightness and contrast settings will depend on the ambient lighting in your workspace, as well as your personal preferences.
4. Configure the color settings to match the color gamut of your primary display. This will ensure that the colors on the Acer X193W LCD monitor are consistent with the colors on your primary display, and will prevent any color shifting or mismatching between the two displays.
5. Enable any additional display features or settings that may be available on the Acer X193W LCD monitor, such as advanced color settings, color temperature controls, or dynamic contrast controls. These settings can help improve the overall image quality and viewing experience on the monitor.

Overall, the ideal settings for your Acer X193W LCD monitor will depend on your personal preferences and the specific tasks you are using the monitor for. Experiment with different settings and configurations to find the settings that work best for you.

Most CRT monitors have buttons on the front of the monitor select a menu to adjust various settings such as the trapezoidal, pincushion, vertical and horizontal height size and position, brightness and contrast etc.

you can use on all vga cards(you dont need any special controler), this monitor has a USB hub
and its is detected normaly on winxp or above, and the vga cards detect the monitor auto.
i give you the monitor specs, take form website

Display Type LCD display / TFT active matrix

Built-in Devices USB hub

Width 18.6 in

Depth 9 in

Height 15.3 in

Weight 17.6 lbs

Enclosure Color Midnight gray

Image

• Display (projector) image aspect ratio 16:10
• Image brightness 300 cd/m2
• Image Contrast Ratio 600:1
• Max horizontal view angle +88 / -88
• Max vertical view angle +88 / -88

Display

• Diagonal Size 20.1 in
• Viewable Size 20.1 in
• Dot Pitch / Pixel Pitch 0.258 mm
• Max Resolution 1680 x 1050 / 60 Hz
• Color Support 24-bit (16.7 million colors)
• Max Sync Rate (V x H) 75 Hz x 83 KHz
• Video Bandwidth 146 MHz
• Response Time 12 ms
• Controls / Adjustments Zoom , Clock , Phase , Contrast , Sharpness , Brightness , Saturation , H/V position , Color balance
• Display Positions Adjustments Height
• OSD Languages French , German , English , Spanish , Japanese
• Display Screen Coating Anti-glare , Hard coating
• Video Output None
• Signal Input DVI-D, VGA
• Features Picture by picture , Picture in picture

Video Input

• Analog Video Signal RGB , S-Video , Composite video
• Digital Video Standard Digital Visual Interface (DVI)

Audio Output

• Type None

Input Device

• Type None

Expansion / Connectivity

• Interfaces 1 x VGA - 15 pin HD D-Sub (HD-15) , 1 x DVI-D - 24 pin digital DVI , 1 x Composite video input - RCA , 1 x S-video input - 4 pin mini-DIN , 4 x Hi-Speed USB downstream - 4 pin USB Type A , 1 x Hi-Speed USB upstream - 4 pin USB Type B

Miscellaneous

• Flat Panel Mount Interface 100 x 100 mm
• Features Security lock slot (cable lock sold separately)
• Compliant Standards CE , CCC , MIC , NOM , PSB , BSMI , GOST , SASO , NEMKO , TUV S , C-Tick , TUV GS , EN55022 , TCO '99 , EN 60950 , ICES-003 , TUV Ergo , UL 60950 , IEC 60950 , EN 61000-3-2 , EN 61000-3-3 , FCC Part 15 B , VCCI Class B ITE

Power

• Form Factor External
• Voltage Required AC 120/230 V
• Power Consumption Operational 55 Watt
• Power Consumption Stand by / Sleep 3 Watt

Environmental Parameters

• Min operating temperature 41 °F
• Max operating temperature 95 °F
• Operating humidity range 10 - 80%

Sustainability

• EPA Energy Star Compliant Yes

its a harware issue nothing much can be done from your end really.......right time for hardware servicing

press F2 when the computer starts, the bios page will appear, ALT+P to change the pages until you see the screen bightness options, then you can change it as you want. I hope this will help

on the front of the monitor there are key buttons naming menu, ok button and left & right arrow marks buttons first press menu button then go to brightness then by using arrow keys you can increase & decrease the brightness once you are finished decreasing r increasing press ok button.& there are many other settings you can change like contrast etc....

You can RESET the monitor setting externally by clicking adjustment menu button goto RESET press ok. If contrast and birghtness not set properly light will not be properly visible

Help! I want to get rid of the "Processing Auto Configuration"