I am running windows 98se on a Dell T700. When I Have two or more windows open and I click on the minus sign to have one page go to the side sometimes it doesn't. It stays there. I can click it open and shut again real fast and it just stays there sometimes fully intact or will just be the page but no graphics or words. What's going on? This started to happen so frequently I just reformatted my hard drive because the only way I could get the page off is to press Central/alt/delete. But the problem is back. Is it the memory? Thanks