El Capitan

I need to change the start up disk to be a different disk instead of my OS X disk. OS X cannot see the disk I want it to use. I cannot change the start up disk back in OS X's settings. How do I use the command line in OS X to fix it? 2009 Macbook Pro OS X El Capitan

Hey, So my computer is in an awkward position and it gets knocked very minorly. Can this make parts loose like ram and gpu?

Ive heard alot of conflicting reports about ryzen 5 and ram so could someone tell me if the above configuration will work or bottleneck it in anyway etc.

My monitor will randomly go black while playing games. Happens 3 or 4 times a week, but only while playing games. The pc needs to be restarted to get it to turn back on. When it goes black though the pc still works normal. Sound is still working as i can hear the game, so the monitor is the...

Hi, I currently have 2x2GB OCZ DDR3 kit and planning to upgrade it to 8GB. Is it okay if I add another 2X2GB kit on my 3rd and 4th slot?