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The faulty existing motherboard CN-OP611C-13740-7CG-01LQ for this Dell XPS 720 PC has been replaced with [https://www.ebay.co.uk/itm/Dell-P611C-XPS-720-Socket-LGA775-Motherboard-No-BP/162599420743?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Dell P611C XPS 720 Socket LGA775 Motherboard] - CN-OP611C-13740-7CF-0031 and [http://www.bios-chip24.com/EVGA-nForce-680i-SLI-Black-Pearl-122-CK-NF69/en Bios chipBIOS Chip] has been swapped.
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