Are you able to go in to the BIOS by pressing F2 on start-up?
In the BIOS select General> Battery information, in there it will show the battery health and AC adapter wattage.
If the health is ok, then try moving the system (whilst still in the BIOS) to see if it changes.
If the system does not lose its connection when you have moved the system, please try running the dell diagnostics by pressing FN2 and power when the system is off or press F12 and select diagnostics form the F12 boot menu.
As you have already re-seated the battery, do you have access to a known good battery to test in the system to see if the battery has failed?
Let us know how you get on,
Thanks Ricky I will try this. I have just replaced the battery, let it charge and then booted it up. The battery seemed ok for a while, went from 26% as delivered up to 100%. THEN the dreaded X appeared on the battery symbol.
It is not randomly rebooting just as it was before.
Looks like you picked it Ricky! There does seem to be a loose or broken connection. It seems to be near the hinge.
I'm pretty sure it is not the main battery plug connection.
sorry I meant it is NOW randomly rebooting as it used to.. by the way it clearly reboots when it is just sitting there untouched..but I did get it to cycle on and off by moving the screen and twisting the body a bit.
Could you send me a direct message with the machine's service tag? I will need to look at the configuration and warranty details before I can advise you further.
Please click my DELL-username and write me a private message.