So my husband kept getting his machine switching off with the skype screeching in the process. All lights even keyboard went off. Assumed PSU wasn't adequate so replaced it and it then still suffered the problem but rebooted sometimes instead. Gradually got worse till PC died all together. This thing is in constant use as he is my carer and cannot really leave the house so it is used to keep him sane lol.
Next we took it to a computer shop to diagnose the problem.
A friend suspected Mobo.
The shop did say it was Mobo so we have ordered one but in the meantime borrowed my son's board to test and found it did the same thing, after a few seconds. So we borrowed his RAM and thought we had cracked it, didn't switch off, great, ordered some, that minute it crashed again aghhhhhhh!!! At the end of our money.
Hoping we are not damaging son's Mobo and RAM as we put my graphics card in to see if that has any effect. They are all compatible with each other luckily. My graphics card is my husbands old one.
Could anyone say what they think we could test next or from that does it sound like the CPU? Shudder.
Did a Chkdisk and showed no bad sectors.
Any help much appreciated.