sorry shold have said keep having to re-set time and date after switching on power. machine is switched off at mains at night agin sorry should have said i will get out pen and paper thanks for that ray
PS if it is a new computer there may be a jumper on the Motherboard near the battery. this is for clearing the CMOS settings it should be in the Run position, to keep the time and settings. If you built it yourself the Mobo jumper is set to the clear position when you get it
To answer your question about changing the battery.
Most modern mobo's the battery is held in place in a battery holder and is very easy to replace. If the computer elderly, the battery is soldered into the motherboard, which is not a problem for the average electronics engineering, but if you're not used to soldering I shouldn't attempt it. Incidentally, I class myself as an average electronics engineer and it was very easy, the most difficult part was having to strip the computer completely to do the job properly, then re-assemble it.
thanks everyone for your help again iam sorry it is an old board should have said it may not be that old that it requires the use of a soldeing iron i hope not eyesight not what it was yhanks once again ray
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