Try getting some big zip lock bags with silica gel and putting your electronics in them.
The WiMax antenna including LNB are up on the roof and the WiFi at ceiling level to avoid blasting my brain with RF ! Difficult to put in bags. We had exceptionally heavy rain here last week, so it is possible damp affected 'things'. You might ask "why WiMax" but only if you haven't tried to get a gigabyte connection on the telephone line in Spain.....
The system itself - PC and software - never fails to start in a few seconds once the OS has unpacked itself inside the 160GB SSD Revodrive (Raid 0/1 config) and hauled my working files off the hard drive.
Nah, in future for long absences PC goes onto 'sleep' and everything else stays on.
Thanks all for suggestions...