HP says that the error 50.00.19 and 50.00.22 come frome defective scanner/laser from one of the colors CMYK and that it can be fixed by turning the printer off and then on or check the scanner/laser connector or replace the ...
If you have purchased a PC or laptop without operating system or with FreeDOS and you want to install Windows 7 from a CD or USB stick you should neet to change some settings in your computer BIOS. First you ...