Monday, July 11, 2011

When writing text my cursor is very erratic, disappearing, running off across the page by itself, etc.?

My cursor often runs off across the page by itself, or just disappears, when writing text in an email or even when using my MS word processor. I even found that often when scrolling down a page, the scroll bar would take off on its own and run all the way down to the bottom of the page. I have a Dell Inspiron 518, running Vista OS, with Firefox browser, Gmail, and Trend Micro Titanium Security suite 2011. Because I had recently also (coincidentally?) suddenly had some other, apparently unrelated, problems (Firefox not running, TrendMicro disabled and not responding to steps to enable it), I downloaded malwarebytes to a flash drive and ran it-- there was no malware on any drives or personal files. I then reinstalled Firefox and TrendMicro, and now the only remaining problem is the original one, an erratic and sometimes uncontrollable text cursor. I've run the Dell diagnostics hardware and full system scan, and the computer passed everything except for one failure in a spindle test (which then passed when I ran the scan a second time). I tried a different mouse, since it seems like a hardware problem, but it made no difference. I haven't tried a different keyboard yet, but I did clean the keyboard with a compressed gas duster. Didn't have any effect. I'm about at my wits end. I need help!

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