Good evening all, I'm new to forums and getting desperate -
I have an E Systems ES-102 machine running XP SP3, which has developed a keyboard problem, it is OK when started up but after a while typing keys produces random characters, and if one key is typed repeatedly it produces a sequence of characters. Everything else is normal, display, mouse and programme function were all OK.
I got the effect in different progs, text editors, word pros and input boxes.
I tried two other keyboards and got the same effect and also with a wireless keyboard.
It seemed like overheating so I cleaned out dust/fluff from the CPU fan and fitted a 2" fan directly over the chipset which allows it to run for several hours without the problem, but it only lasts about 30mins on the internet (wireless connection).
The prob also developed on a HP Pavilion running Windows 7 (32bit) with wireless and USB keyboards (both new) after I had used it for a couple of days. Again I cleaned it and removed redundant cards (TV and Modem) to try to reduce the heat load, now this m/c will run about 2 hrs (with the side panel removed) but it lasts only about 30mins on the web (ethernet cable).
Task manager shows typically 23-35% memory usage on these PC‘s, I run a ZoneAlarm pro firewall with Forcefield Virtual PC before I connect to the web, I use the web occasionally and not usually for long.
In case it was a virus:- I ran full system scans with current versions of Spybot, AVG free, and Avast together with rootkit scans - no results.
I also ran Trend Micro’s Rootkit Buster and Hijack This which showed nothing dodgy
Both PC's behave normally in other respects even when the keyboard is screwed, no display or mouse probs.
And they always restart normally and will run again without problem if they aren't connected to the web.
I’m running out of ideas!