Gtx 660 Wont display

ianster2000

Honorable
Jan 10, 2014
9
0
10,520
I recently bought a gtx 560ti from Zotac about a month ago to upgrade my gt 640 and i installed it correctly with the right amount of power and it showed a black screen. Fan turned on and everything! I thought it was DOA so i returned it and bought a gtx 660 from PNY and same problem! Fan turned on and everything! I disabled onboard graphics and uninstalled drivers. HELP! And could it be my motherboard?

System specs (psu changed to a evga 500b psu)

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4ts.oid=5330777&spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-c03704551-11%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken