Bios launches but no POST, 2 beeps

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Joe Nickels

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Mar 15, 2013
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When I start up I get a black screen with only a status code in the corner (usually B4 changes to A2 just before booting) before bios boots. 2 beeps, AMI I think. RAM shows up fine in BIOs but not my video card nor does it output (although I think that's a driver issue or possibly mobo/bios update needed). Can't find any option to enable POST anywhere in the bios. Onboard video is fine and I can access the bios, boot utility and efi shell.

Should I be worried?

Haven't installed windows yet but I'll run a couple memory tests when I do.

Specs:
Intel Core i5-3470 3.2GHz Quad-Core Processor
MSI B75MA-E33 Micro ATX LGA1155 Motherboard
Corsair XMS3 8GB (2 x 4GB) DDR3-1600 Memory
Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive
Club 3D Radeon HD 7870 XT 2GB Video Card
Corsair 500W 80 PLUS Bronze Certified Aria PC

Any help appreciated, thanks in advance.
 
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mbreslin1954

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Nov 27, 2010
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I'm confused. If RAM shows up in the BIOS, and you can't find anywhere in BIOS to enable POST, then it sounds like the system will at least boot into BIOS, no?

There's no need to install Windows in order to check memory. If you have access to another computer, download and burn an ISO of something like the Ultimate Bood CD, which will boot up in a version of Linux and has all sorts of diagnostics. It's a little old, been about three years since it's been updated, but it's good for memory testing and CPU testing. Burn it to a blank CD, then use that CD to boot up your system (if it will boot to a CD at this point). Run Memtest86 to test memory.

http://www.ubcd4win.com/downloads.htm
 
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smorizio

smorizio

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Jan 22, 2010
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try posting with the onboard video only and one stick of ram. also look to make sure the 4/8 pin atx power on the mb is connected. if it not connected or you forgot a power plug on the video card the video card wont post. booting with onboard video will show if your system is fine..then flash the bios of the mb to the last bios update and then try your video card.
 
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J

Joe Nickels

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Mar 15, 2013
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10,510


Onboard is fine, should have been more clear in the first post, and yeah flashing the Bios was the plan
 
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