Motherboard won't accept a 1333mhz CPU currently using 800Mhz CPU both CPU's are compatible

zythros2

Reputable
Jan 12, 2015
6
0
4,510
Ok so old school here I bought a brand new(to me) DG35EC motherboard when I put it into my computer the clock read january 8th of 2006 good year.. found out the external graphics card slot doesn't work.. don't care only paid $25 for motherboard and, intel E4600 CPU (2.2ghz) 800mhz and cpu fan + free shipping.. couldn't resist now my old motherboard which I replaced with the DG35EC was an ASUS P5n-e SLI which took a crap on me it had a E8400 whereas the one I'm currently running with the DG35EC is the E4600 at bus 800 Mhz speed.. now when I try to replace 4600 with 8400 (1333 mhz) on DG35EC mobo, computer turns on but doesn't boot monitor doesn't turn on either so I can't enter bios, I know some of you might think the CPU went bad causing motherboard failure on the first mobo but I don't believe this was the case the mobo just quit booting.. and it'd had trouble booting for some time but I'd just switch the power on and off or flip the computer upside down( don't ask it worked) and I had upgraded CPU's during this time period and the problem continued went from a E4400 to E8400..

I've updated the BIOS to latest version and looked at intel's website which says min. Bios 72 and mine is 118 and I know the CPU is supported because I can buy this mobo on ebay with this CPU already equipped and I looked on intel as well? what gives the E8400 is a SLB9J if that makes any difference? I'm thinking maybe the MOBO might have more problems than I thought but seems like it just won't auto shift from 800 mhz to 1333mhz like I'd think it should. what do you guys think MOBO issue or is there an easy fix in the BIOS or something ive overlooked?
I'm leaning towards faulty MOBO myself