Asus M5A97 R2.0 Won't Load BIOS

ZenShredder

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Jul 28, 2014
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I came home this evening to find my computer wouldn't boot, the last thing I needed after a long day. So I started to troubleshoot but I couldn't get very far because I have work and won't be able to check everything until Monday afternoon, so I'm writing this to see if anyone can help me troubleshoot the problem based on what I know already. Here are my specs:



ASUS M5A97 R2.0 motherboard
AMD FX 8350 stock speed and fan
4X4GB AMD R9 Gaming RAM @ 2133mhz(clocked down to 1866 for the FX 8350)
MSI R9 290 4GB
Corsair HX850 80 Plus Gold PSU
Samsung 840 EVO 250GB(OS and apps)
WD Black 3TB 7200 RPM drive(games and personal files)


What I know so far is this:

I don't think it's the RAM, I pulled out all the sticks, put them all in the first slot and booted each time with no success. So unless all 4 sticks went bad all of a sudden then I doubt they're the culprit.

The mobo light is green when receiving power, which puts me in a conundrum on my theory of what the problem is because I originally suspected the board being bad.

The MemOK light flashes for a couple of seconds on boot, but is not solid.

When I start up the computer, one of the lights for the fan speed control does not turn on. This has been a problem in the past that fixed itself somehow recently and now it has come back. I suspect a possible power issue because the light was the middle light of the 5, and now it is one of the end lights.

When I start the computer, the CPU fan spools up to about 50% speed and the. Immediately drops to about 10%


So I know I don't have too much to go on but maybe someone has an idea based on my current observations. Monday afternoon I plan to strip my computer apart, check all the connectors for the power supply pins, and carefully put everything back together to see if anything changes. I don't have a little speaker for the beep codes, and I don't know how to do a CMOS clear so if that is advisable I'd appreciate a video link on how to do it properly.


Thanks in advance for any and all help, it is deeply appreciated!
 

Kliqx

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A PC that doesn't boot could be a range of issue from software to hardware. It could be like you said a faulty Motherboard, RAM (unlikely all sticks died at once), PSU (Maybe) or it could just be some dodgy motherboard software issue.
Clear the CMOS battery and try again. If that fails remove all RAM sticks and try 1 by 1
Is there an old PC you can check these parts on?
Try your best to troubleshoot but it could be something like a power flicker or surge.
Do you leave your PC on during the day? If so could there have been a power surge, are all your microwave, oven clocks still in order?
 
ZenShredder,

The CMOS clearing idea is a good place to start. I've not ever done it, and you might have a look at a YouTube video to confirm the procedure, but which is apparently having everything off, (and I would unplug and press the power switch to discharge), prying the battery out of it's holder and leaving it out for 10-15 minutes. Replace the battery with the correct orientation and switching on the system should reflash the CMOS.

Still, the other symptoms are possibly power related and checking all the connections to and from the power supply would be the next area of attention. The Corsair HX has a very good reputation for quality, but surges, RF, and undervoltage in power lines are not unknown. I had quirky problems with audio gear years ago and found that the outlets in the house varied from 109V to 129V over time. I run all computers and audio components such as preamplifiers, microphone preamps, and tuners off of isolation transformer power conditioners (Powervar and OneAC).

Let us know what you find out- that's an odd one.

Cheers,

BambiBoom

HP z420 (2015) > Xeon E5-1660 v2 six-core @ 3.7 / 4.0GHz > 32GB DDR3 ECC 1866 RAM > Quadro K4200 (4GB) > Intel 730 480GB (9SSDSC2BP480G4R5) > Western Digital Black WD1003FZEX 1TB> M-Audio 192 sound card > 600W PSU> Logitech z2300 > Linksys AE3000 USB WiFi > 2X Dell Ultrasharp U2715H (2560 X 1440) > Windows 7 Professional 64 >
[ Passmark Rating = 5064 > CPU= 13989 / 2D= 819 / 3D= 4596 / Mem= 2772 / Disk= 4555] [Cinebench R15 > CPU = 1014 OpenGL= 126.59 FPS] 7.8.15

 

ZenShredder

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Jul 28, 2014
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So...I figured out the problem.

I'm deeply ashamed to even say it, but I didn't want to leave this thread hanging, especially with such good advice given.

My "monitor" is a Vizio 50" smart tv, my desktop connected by an HDMI cable. In my defense, I've had this TV for 2 years, my girlfriend never touches it. Well yesterday she decided to use it for whatever reason, watching Netflix and such, and somehow fiddled with the input channel...yeah. That's it. No faulty RAM, no power surge, just the wrong HDMI channel was selected.

*the most epic face palm ever*