The resolution of my machine can t be higher than 800 600, otherwise the screen will go black!

It's not a problem with the graphics card, it's the low resolution supported by the monitor, and you won't have this problem if you change the monitor. You can now try it out and point in the display properties"Advanced", set the refresh rate to the lowest and see if the monitor works.

Check this out: Current mode: 800 x 600 (32 bit) (100Hz).

The refresh of your graphics card is 100hz, no matter how high the resolution is, the display bandwidth is not enough, which is normal.

Change the refresh rate in "Display Properties> "Settings> "Advanced" > "Monitor" to 60-85hz.

Run the command: dxdiag

dot display. See if the acceleration below is normally available. If acceleration is not possible, it is not possible to indicate that your driver is installed at the end.

Or maybe the hardware acceleration function is not fully turned on. Open the desktop on the right keyboard - Properties - Settings - Advanced - find the hard disk acceleration. Pull to the fastest. Are you sure.

The standard resolution of the 17-inch monitor is 1024*768, and it can be 1280*960 normally

Yours should be a problem with the display hardware.,It's a new hardware and the resolution can't go up.。

It's okay to start, but suddenly it's not working.

Very simple question. It's just that your monitor is too old.

You say yes or no. I had to change the monitor. It has nothing to do with the graphics card. Or just 800 600

The graphics card is not driven well, you look for the ATI graphics card catalyst and re-drive it.

Methods and steps to reduce screen resolution:

1. Turn on, when you are about to enter the system options, immediately press the F8 key to enter the "advanced mode", because the time displayed in the system options interface is very short, you can press the F8 key early, otherwise you will have to start again if you miss the opportunity.

2. After entering "Advanced Mode", select "Safe Mode" and press Enter to enter.

3. It will take a little longer to enter the safe mode than to enter the normal system mode, so wait patiently, after entering, the screen background is black, and the taskbar is also white, because the safe mode is the boot mode with the least resources, so many things will not start.

4. After entering, right-click on the blank space of the desktop, and select "Properties" in the right-click menu.

5. Open the "Display Properties" window, in the window tab, select the "Settings" item.

6. In the settings page, select the "Advanced" button below and click to enter.

7. In the (Default Monitor) and Properties window, select the item "Adapters".

8, entered the "adapter" page, click the "list all modes" button below, a list box will pop up, choose the resolution suitable for your monitor, my monitor is 17 inches, 1024x768, so select: "1024x768, true color (32 bit), default refresh" this item.

If you don't know much about your monitor's resolution, you can turn it up to a minimum of 640x480, followed by the rest"True color (32-bit), refresh by default"To be the same, after the repair is completed, go and slowly adjust back to the normal resolution.

9. After the setting is completed, press "OK", and press "OK" all the way back. Then restart the computer to see if it can enter the Windows system normally.

10,If the above can enter the system normally,Repair the resolution successfully,The following will not be executed,If it doesn't work,Enter the "Advanced Mode" according to the above method,Then select "Enable Mode"This item,The other steps are the same as the safe mode,Desktop right click->Properties-> Settings->Advanced-> Adapter-> list all modes-> select the resolution that suits your display->OK。

Turn on F8, select safe mode, go in and change it back

The monitor shouldn't be the old one!

See what its maximum resolution is, and if it's only 800*600, swap out the display.

If that's not the reason, reinstall the system! It will work!

1.First, check whether the VGA** cable is firmly inserted into the host interface and monitor interface, then check whether the contact between the graphics card and the motherboard I-O slot is good, and finally check whether the CPU fan is running normally;

2.If the computer starts normally, the original monitor may be damaged;

3.You can remove all components of the computer except the CPU, graphics card, and memory module and boot the computer. If there is a fault in the memory, there should be an alarm sound. If there is no alarm sound, then turn on the CPU and re-detect. If the computer screen is still black, it is recommended to replace the motherboard;

4.If the system installs software and updates patches that cause a black screen, you can try to uninstall the update file;

5.After installing the software on the computer, restarting the update causes a black screen and waits for the update to be completed.

6.Enter the safe mode to repair the computer, if it can't enter the safe mode, please reinstall the system.