hi changed my ram from 2gig of patriot 6400 800mhz to 4gig of 8500 1066mhz ballistix from cruicial. my vista rating went down from 5.5 to 5.3.i changed settings to 5.5.5.15 1066mhz and 2.0volt did manually. few times it was bleeping but then was ok got upto 5.4 rating.but now getting it bleeping few times when boot up giving C1 code on Mboard evga Nforce 680i SLI. tried taking out resitting ram &tried only 2 then 4 sticks and did bios mem check said 2 ok then 4 when replaced.lists 4gig on welcome page (vista).had on today no problem switched back on now bleeping C1. took out power lead depowered with switch like when you install ram to use up residule current.booted up but says in safe mode &says changed to 800Mhz and altered pin settings. it is the single sided ram.says please reset cpu speed memory frequency in bios etc. no problem before with old ram apart from shop put there copy of vista onit instead of mine.its an aleinware core 2 duo 2.67ghz E6700 1066mhz.
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