Workstation Z400 about 8 yers old. White horizontal lines 3 cm long in colums from top to bottom of screen. Over the whole screen. Graphics QADRO 4000... Monitor OK. Demounting the graphics card and cleaning some part of the PC-card made it function better but lines came back after some time. I have made the same operation thre times later but after the last one the lines did not disappear.
Loaded the latest driver to the card. Win chrashed.. According to win hardware analys there are 24 Gb
memory installed "but only 3,5 Gb usable" ?? Means what? Memorys bad or memory management
outdated? Drivers old I guess.