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thanks - will try the memory test. Yes-had most things out-all cleaned and reseated Also forgot to post in previous message that the new graphics card crashes with both new memory setup and previous.

Have recently upgraded my old pc. With the spec listed below the upgrade I have fitted is the 350psu which replaced a 250psu. The system also used to have 3 memory modules (1gb - 512mb - 256mb) which was altered to 2 modules (2 x 1gb). In this arrangement the PC works fine. However at the...

you are covered for almost everything for both your boiler & system i think the only real exclusions are any work to flues (open flues only) and any faults caused by blockages (i.e heat exchanger scaled or sludged up). All of the exclusions are somewhere in the terms & conditions

masona: as i understand it there are 4 basic combi designs. i believe that two work with a pump on the HW side and the other two don't.

Assuming you are on an open vented system (CH expansion tank in loft) it is worth checking your open vent/cold feed are round the right way. Pipework should be configured as below: Open vent (usually 22mm) - Cold Feed (usually 15mm) - Pump If these two pipes are the wrong way round the...

The radiators will never be as hot at the bottom as at the top due to stratification (hot water rising). However if the bottom of the radiators are cold then this indicates a blockage which will most likely require a powerflush to clear. Hope this helps