Microsoft release its December update as it does every month.
My wife’s computer is Compaq Presario SR1520NX. I update it as usual. This time it has one hardware drive update for video driver.
The chipset of this PC is SIS 760.
After update all critical and hardware updates, I reboot the computer.
The screen resolution become 640X480 with 4bit color.
What happen? I tried a lot of different way to change the resolution and color depth. I still kept the same low resolution and 4 bit colors.
It is crazy.
I search the Compaq’s website. Go to the drivers part. Only original graphics drivers provided on site.


I have an idea. Just go to the SIS site. Find the driver download page.
I chose Windows XP > IGP Graphics Drivers > SIS66x & SIS 76x series.
Download the driver and install it.
All fine, I can setup the screen to 1024X768 with 32bit color and 75Hz refresh rate.
Base on my experience, the problem is from Microsoft or Compaq. On the SIS official driver can work smoothly on Compaq computer.

David Yin

David is a blogger, geek, and web developer — founder of If you like his post, you can say thank you here

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