Bundle : http://www.overclockers.co.uk/showproduct.php?prodid=BU-010-OB Other specs : Palit GeForce GTS 250 1024MB GDDR3 PCI-Express Graphics Card Corsair TX 650W ATX SLi Compliant Power Supply Seagate Barracuda 7200.12 160GB SATA-II 8MB Cache Sony Optiarc AD-7241S 24x DVD±RW SATA Lightscribe Optical Drive Symptoms : OCuK overclocking tweaks giving all kind of instability results. These include the following ; 1. POST is taking about thirty seconds to complete, if it is completed at all as it sometimes it resets itself automatically. 2. If POST succeeds either a) it prompts an overclocking error! or b) it detetects my HDD and DVD-Rom but doesn't boot from either of these. (it just stays put on a blank screen with a blinking cursor on the top left corner) or c) it starts to boot from DVD-rom but immediately freezes after a few seconds, in case i have to restart the system myself and the cycle is repeated again Resolution up till now : Booted with default BIOS settings and everything went smooth but restoring OCuK BIOS profile would bring about the above symptoms once again Would urgently request some guidance or any idea of what could have gone wrong thanks.