Hi Christine, you say you have new RAM chips installed - a common fault with doing this is that they are not seated properly - that may well cause your problem. The first thing I would do is to take all the RAM modules out and then re-seat each one. Make sure that the lugs on each end of the chips are locked home. Oh - yes - please disconnect from mains before doing this and leave machine for about twenty minutes - this lets it cool and before you touch the chips make sure you have earthed the main chassis by touching it. You are also advised to wear an "earth strap" while doing it - basically stick bare toe on radiator if possible or stick a piece of wire from your wrist to a suitable earth point in the house - this is so any electrostatic charge in you doesn't blow the chip. If that does not work let me know for further cures.
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