It's old, custom...windows7, 32 bit, & i can't look up the specs, because when i try to click anything, the window will open, but lock up, and can't click anything inside the window or click x to close it. Can't click on start button either or anything else, as they are not highlighted as clickable. only thing i can do is use window key on keyboard to open start button, then scroll to choose something, but once it's open, i can't click anything. i've tried turning it off, then holding down "on" button to drain power off motherboard, rebooting, but still lolcked up. All drivers have been updated, but still having problems with windows not able to update, because of errors. Error fix is to turn off firewall, but I can't turn it off to allow updates, because i can't access that part of control panel, because of the locking up. I'm so frustrated