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Last response: in Graphics & Displays
August 22, 2013 11:17:02 AM

I recently bought a new MSI GTX 760 Twin Frozr along with a Cool Master Extreme 625W power supply to upgrade my HP desktop. The specs were previously:
Intel Core i7-3770(not K)
AMD RADEON HD7570 2GB-------Upgraded to GTX 760
HP 460W PSU --------------------Upgraded to 625W
IPMMB-FM (Formosa) Motherboard
a link to full computer specs:

After installing the card the/psu the system wont boot. Instaed there are six long beeps. The system works fine with the new psu and old gpu but not with the new one. I uninstalled all Ati drivers and tried booting in legacy mode but still nothing. I even updated the BIOS so WTF???
a b ) Power supply
a b Î Nvidia
August 26, 2013 5:58:06 AM

that PSU is probably poor quality and is not able to support the 760, what brand is it from?
August 26, 2013 8:19:49 AM

theoretically and piratically there should be no problem with support of 625 watt psu

have you pluged the 6 pin power connector in gtx 760 ??
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January 6, 2014 1:36:13 AM

Was this thread sorted? I've having the exact same issue.
April 1, 2014 2:03:44 PM

dvs_xerxes said:
You need to turn off secure boot in the bios before you install your video card, install your old card or use the on board one. Then go to the bios and follow these instructions

Just to let any who follow know, this was the key for me. Installed a GTX-760 on an HP Pavilion p7-1519C and we needed to disable secure boot. Once that was done, the card was recognized and we were away to the races.

Good luck all!