An Intel driver update web page in Mozilla Firefox requested that I install Java to display everything on the page. I did, and it came with Java FX as indicated later when I went to do a system restore. After the installation, I had problems with the mouse pointer “hanging” in the same place though I was moving the mouse, repeatedly and frequently, or disappearing, and with flashing menus in Firefox (Now you see it, momentarily — now you don’t!). A few times, the keyboard and mouse both became disabled (num lock key on the keyboard went out, mouse laser sometimes went out) and I was able to make them work again only by unplugging them and plugging them into other USB ports or restarting the computer. And also, the computer was repeatedly indicating with a Windows sound (the downward pizzicato musical fifth, “da-dum”) that devices were being disconnected, several, one after another, but neither the Windows Explorer, the Storage dialog box nor the Device Manager showed any as missing. These problems occurred even when I had no applications open.
I have now run a system restore to before the Java installation and the computer appears to be running normally again.
Have other people seen this rather vexing problem? Assuming that the problem is with Java, is there a way I can have Java functionality without the problem? I do recall earlier having had the flashing menus in Firefox, before a system reinstall, though not the keyboard and mouse problems.
Computer: Powerspec G160 tower, specs are here: http://powerspec.com/systems/system_specs.phtml?selection=G160. The computer has a couple of add-ins: a Blu-Ray drive, an additional hard drive; the two stock hard drives are de-raided, running independently; and I have four external drives connected by USB.
Operating system: Windows 7 Home Premium with Service Pack 1