[QUOTE=knewuser;11950]Hello

New to computing so very green.

Have Dell Inspiron just over 1yr old.

Recently when I plugged in the mains backup my computer crashed to a blue screen with white squiggles.

Did a bit of research and have run diagnostics and got...

2000-0123 memory integrity system failure

I also tried to put the computer back to factory installation but this failed with the message "there is a problem with windows and the machine will shutdown to protect the computer"

Really at a loss to know what's happening.

I only use my compuer for internet browsing. I don't store anything or have music downloads or play games etc.

Any help would be greatfully appreciated.[/QUOTE]

That was your answer. You have a failed memory stick...to verify this ...download memtest ISO image zip file and burn it to Cd to create a self booting diagnostic CD. Boot to the CD and run the test for a few hours and if there are any errors then the memory stick that failed will HAVE to be replaced.

Memtest86.com - Memory Diagnostic