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m4a785-m wont post plz assist

post #1 of 11
Thread Starter 
hey all , I have a asus m4a785-m motherboard with an athalon II 4x620 pros, and 2x 2gb pc2 6400 OCZ2N800SR4GK
, now while tinkering with my bios i have mistakenly set my memory speed to 533, when i should have realized my ram can only handle 400 (800mhz),
so i rebooted after saving and i just get a black screen, the video does not post, so i remove the ram, and i reset and i get 3 beeps over and over ,MB errors from not having ram installed in my system i presume, and no matter what slot assignment or order i put the 2 ram sticks in i can not get any video to post so i can get back to bios and fix it., i have tried the switching jumper to clear cmos, i have even taken the cmos battery out for a few minutes and no matter what i try i can not get the computer to post.. surely 1 simple ram change wouldn't kill the ram in 30 seconds of being on... and both sticks at that... there has to be another way reset this motherboard.. as i don't have any spare ram to test with right now..
any assistance would be great.
thanks.
post #2 of 11
When you removed CMOS battery did you cycle the PSU so that it has no juice left in it while unplugged?
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post #3 of 11
Thread Starter 
with the pin on i held the power button on for 5 sec, then shut the psu off from the back and help power for another 5 sec, what else can i try'?
post #4 of 11
Quote:
Originally Posted by randmvilnce;12181336 
with the pin on i held the power button on for 5 sec, then shut the psu off from the back and help power for another 5 sec, what else can i try'?

hmm let me do a bit of research and i will get back to you

Edit:
Ok first take your motherboard PSu connectors off and try clearing CMOS and pulling the battery
try this second
you can try and do a recover of the BIOS using the cd that came with it (got this info from the manual), I cant seem to understand why video wont post though, just see if it will do anything with that disc in the drive,
if not, let me know

Edited by raidmaxGuy - 1/28/11 at 5:50pm
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post #5 of 11
Thread Starter 
fixed, i re tried cmos battery and on off with the cmos clear jumper moved around, got it licked.
thx for the assistance mate smile.gif
post #6 of 11
Quote:
Originally Posted by randmvilnce;12181457 
fixed, i re tried cmos battery and on off with the cmos clear jumper moved around, got it licked.
thx for the assistance mate smile.gif

no problem, i know how ya feel, on one of my computers i 'experiment' with the BIOs settings so im clearing CMOS regularly
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All Bite, No Bark
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K9 UN1T
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CPUMotherboardGraphicsRAM
Intel Core i7 7700k GIGABYTE Aorus GA-Z270X-Gaming EVGA GTX 1070 Hybrid Gaming 16 GB G-Skill DDR4-3000 
Hard DriveCoolingOSMonitor
Samsuning 960 Evo m.2 PCIe SSD Corsair H100 Windows 10 Professional x64 27" Samsung S27D590C Curved 1080p monitor 
MonitorKeyboardPowerCase
27" AOC I2757FH 1080p monitor Coolermaster QuickFire TK Coolermaster V750 Corsair H440 Black/Red 
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CPUMotherboardGraphicsGraphics
i5-3570k ASRock Z77 Extreme6 Gigabyte GTX 770 Superclocked Windforce Gigabyte GTX 770 Superclocked Windforce 
RAMRAMHard DriveHard Drive
Kingston HyperX T1 G-Skill Ripjaws Sandisk SSD Hitachi Desktar 
Hard DriveHard DriveOptical DriveCooling
Seagate Barracuda Green Western Digital Asus DVD-RW Corsair H100 
CoolingCoolingCoolingOS
Corsair SP 120 Quiet Edition (x2) Bitfenix Spectre Pro LED 140mm White/Red Bitfenix Spectre Pro LED 120mm White/Red (x2) Windows 8.1 Pro 
MonitorMonitorKeyboardPower
AOC I2757Fh 27" IPS LED 1080p monitor Dell E207WFP 20.5'' TFT LCD monitor CM Storm QuickFire TK Cooler Master V-750 Modular 80 Plus Gold 
CaseMouseMouse PadAudio
Cooler Master Storm Stryker Roccat Savu HyenaAgenda 18'' gaming mat JVC HA RX700 
AudioAudioAudioAudio
Logitech G930 Wireless Headset Sound Blaster Z JVC RX-6000V 500W receiver Bose Acoustimass 3 Series III 
OtherOtherOtherOther
SMK LINK Bluetooth 4.0 +EDR Adaptor Logysis Red 12" CCFL Belkin n52te speedpad Logitech Wireless Gamepad F710 
Other
Logitech Extreme 3D Pro 
CPUGraphicsGraphicsRAM
Intel i7 6820HK Intel(R) HD Graphics 530 Nvidia GeForce 980m Hynix DDR4 2133 
Hard DriveOSMonitorPower
1TB HGST 7K1000 7200RPM Windows 10 x64 Home Edition IGZO-IPS TrueLife 400 nits UHD display Dell 240W AC Adapter 
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post #7 of 11
Note that you will need to update the BIOS to properly support Athlon II x4
post #8 of 11
Thread Starter 
hey guys, i just noticed somthing,
i did a bios update to the current firmware , it worked fine and i now see the new version firmware # in my bios, BUT, it seems to have disabled 1 of my sticks of ram, it see's the stick in dimm 0 , but not the one in dimm 1... i can swap them out on dim 0 either one seems to work the same, so i know there is nothing wrong with them, its just like its not acknowledging the second slot at all... any suggestions?

here is the exact ram im using
http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_6400_sli_ready_edition_4gb_dual_channel
Edited by randmvilnce - 1/28/11 at 9:09pm
post #9 of 11
I have that same board and I had lots of issues trying to use OCZ ddr2. They finally pushed me over the edge and I bought some Mushkin Redlines and all my problems simply went away. I too have the most recent bios but I flashed the board right away so I had the needed cpu support.
budzos
post #10 of 11
Thread Starter 
it just sucks that i had 4gb ram yesterday running fine for 8 months.. i do a bios update and now i got 2 lol...
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