Hello
I’m using an XPSP3 host, and for a while now, I noticed that the 0 key on the keypad sometimes stops working for a few hours and starts working again, without rebooting in between.
It could be a virus, but before launching Comodo to scan fils on the hard disk, which will take hours, I was wondering if 1) someone has already experienced this, and 2) whether Comodo provides a lighter alternative by simply scanning programs currently loaded in RAM.
Thank you.
If it is only affecting one key and at intermittent intervals and for varying durations, I would suspect a hardware error, more than anything else.
I would expect a keylogger to either 1) have no discernible effect or 2) affect more than a single key.
You can create a simple memory only scan in CIS, by turning on “Scan memory” in the AV settings and creating a custom scan that only scans a single innocuous file. This would achieve a scan on memory resident objects and take next to no time.
Hope this helps,
Ewen 
Thanks for the tip. I find it odd that only that particular key on the whole keyboard stops responding, and only for a while before working again, but I’ll get a new keyboard and see how it goes. It’s an opportunity to find one that’s 100% silent, too.
In Advanced Settings > Security Settings > Antivirus > Realtime Scan, I checked the option “Scan computer memory after the computer starts”, which oddly, is unchecked by default.
Keyboards are mechanical devices and will wear over time. I still have an old keyboard that I keep for back up. It has one flaw and that is that, even after cleaning it, one letter does not always register…
In Advanced Settings > Security Settings > Antivirus > Realtime Scan, I checked the option "Scan computer memory after the computer starts", which oddly, is unchecked by default.It will make booting longer. So as such it may not be appreciated by everybody...